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Crystal Electric Field Level Scheme Behind Giant Magnetocaloric Effect for Hydrogen Liquefaction
Description/Abstract:
The relationship between ΔSM and crystal field parameters derived in this study provides new guidelines for searching for compounds with ...
Keyword:
Magnetocaloric effectg
and
Neutron scattering
Resource Type:
Report
Author:
N. Terada
,
H. Mamiya
,
H. Saito
,
T. Nakajima
,
T. D. Yamamoto
,
K. Terashima
,
H. Takeya
,
O. Sakai
,
S. Itoh
,
Y. Takano
,
M. Hase
, and
H. Kitazawa
Journal:
J-PARC MLF Annual Report 2022
Date Uploaded:
20/05/2024
Ultrahigh Responsivity of Diamond-based Solar-blind Photodetectors Using Hydrogen Plasma Treatment
Description/Abstract:
Diamond-based solar blind ultraviolet (UV) photodetectors (PDs) have attracted extensive attention due to their unique characteristics in...
Keyword:
Diamond
and
photodetector
Resource Type:
Poster
Author:
Keyun Gu
,
Zilong Zhang
,
Guo Chen
,
Liwen Sang
,
Jian Huang
,
Yasuo Koide
, and
Meiyong Liao
Date Uploaded:
16/05/2024
Zero-magnetic-field operation of ordinary-Nernst-effect-based transverse thermoelectric module using embedded permanent magnets
Description/Abstract:
The ordinary Nernst effect enables large transverse thermoelectric conversion in semimetals but its operation requires the application of...
Keyword:
ordinary Nernst effect
,
permanent magnet
, and
transverse thermoelectric conversion
Resource Type:
Article
Author:
Masayuki Murata
,
Takamasa Hirai
,
Takeshi Seki
, and
Ken-ichi Uchida
Journal:
APPLIED PHYSICS LETTERS
Date Uploaded:
15/05/2024
高信頼性材料実現を目指す粉体成形・焼結中の不均質構造の放射光X線トモグラ フィー解析
Description/Abstract:
最近,広視野で低解像度のマイクロCT と,狭視野で高解像度である位相差高エネルギーX 線ナノCT からなるマルチスケールX 線CT が大型放射光施設SPring-8 の竹内らによって開発された.このマルチスケールCT システムは,亀裂開口変位(COD)が非常に小さい亀裂状...
Keyword:
Sintering, Heterogeneity, Microstructure, Defect, 3D tomography
Resource Type:
Article
Author:
大熊 学
Journal:
協会誌「セラミックス」(CERAMICS JAPAN)
Date Uploaded:
13/05/2024
A new class of crystalline X-ray induced photochromic materials assembled from anion-directed folding of a flexible cation
Description/Abstract:
Electron-deficient viologens are widely used as ligands or structure-directing agents (SDAs) to synthesize crystalline X-ray induced phot...
Keyword:
Anion-directed folding
,
Electron-deficient viologens
,
Photochromic
,
Supramolecular
, and
X-ray induced
Resource Type:
Article
Author:
Hong-Jin Liao
,
Zhu Zhuo
,
Qing Li
,
Yoshihito Shiota
,
Jonathan P. Hill
,
Katsuhiko Ariga
,
Zi-Xiu Lu
,
Lu-Yao Liu
,
Zi-Ang Nan
,
Wei Wang
, and
You-Gui Huang
Journal:
Chinese Chemical Letters
Date Uploaded:
13/05/2024
Crystal electric field leading to giant magnetocaloric effect for hydrogen liquefaction
Description/Abstract:
In the present review, we focus on showing relationship between giant magnetocaloric effect and crystal electric field effect, by present...
Keyword:
crystal electric field
,
magnetocaloric effect
, and
neutron scattering
Resource Type:
Article
Author:
寺田 典樹
Journal:
KEK ANNUAL REPORT
Date Uploaded:
10/05/2024
膜型表面応力センサを用いたニオイセンサの開発とその社会実装に向けた取り組み・展望
Description/Abstract:
嗅覚は人間の五感の一つであり、嗅覚により我々はニオイから様々な情報を得ている。したがって、人間の鼻に代わってニオイを検知できるセンサがあれば、様々な産業分野において、作業の自動化や機械化が実現したり、これまでにない新しい製品やサービスの提供が可能になったりすることが期待され...
Keyword:
嗅覚センサ
and
車載
Resource Type:
Article
Author:
今村 岳
Journal:
車載テクノロジー
Date Uploaded:
08/05/2024
接着継手の疲労き裂進展特性について
Description/Abstract:
接着剤を用いた接合構造物の破壊や寿命は,大部分が接着接合部でのき裂の発生や進展に支配されている。本解説では,種類の異なる市販および開発接着剤と鋼被着体を用いた接着継手の疲労き裂進展特性を示す。き裂を考慮した接着継手として,モードI荷重下となる二重片持ち梁試験片を用いた。試験...
Keyword:
adhesive bonded joints
,
double cantilever beam
,
fatigue crack growth Properties
,
fracture mechanics
, and
mode-I
Resource Type:
Article
Author:
内藤 公喜
Journal:
日本接着学会誌
Date Uploaded:
07/05/2024
Two displacive ferroelectric phase transitions in multiferroic quadruple perovskite <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mi>Bi</mml:mi><mml:msub><mml:mi mathvariant="normal">Mn</mml:mi><mml:mn>7</mml:mn></mml:msub><mml:msub><mml:mi mathvariant="normal">O</mml:mi><mml:mn>12</mml:mn></mml:msub></mml:mrow></mml:math>
Description/Abstract:
We report on the microwave, terahertz (THz), infrared and Raman spectroscopic studies of BiMn7O12 ceramics, shedding more light into the ...
Keyword:
BiMn7O12
,
ferroelectric transition
,
multiferroic
, and
perovskites
Resource Type:
Article
Author:
A. Maia
,
M. Kempa
,
V. Bovtun
,
R. Vilarinho
,
C. Kadlec
,
J. Agostinho Moreira
,
A. A. Belik
,
P. Proschek
, and
S. Kamba
Journal:
Physical Review B
Date Uploaded:
02/05/2024
Polarity Does Not Matter: Molecular Weight Reverses the Photoisomerization-Induced Phase Separation of an Azobenzene-Bearing Polymer
Description/Abstract:
The non-canonical photoisomerization-induced phase separation of an azobenzene-bearing polymer is found. The polymer composed of acrylate...
Keyword:
azobenzene
,
hydrophobic effect
,
isomerization
,
liquid-liquid phase separation
, and
molecular weight
Resource Type:
Article
Author:
本間 健太
,
チャン チン シュエン
,
山本 翔太
,
上木 岳士
, and
中西 淳
Journal:
MACROMOLECULAR RAPID COMMUNICATIONS
Date Uploaded:
01/05/2024
Study of device characteristics of intrinsic Josephson junction terahertz emitters related to annealing conditions of the crystals
Description/Abstract:
We fabricated terahertz (THz) wave emitters from high-temperature superconductor Bi2 Sr2 CaCu2 O8þδ (Bi2212) single crystals annealed und...
Keyword:
Josephson junction
,
annealing condition
,
high-temperature superconductor
, and
terahertz emitter
Resource Type:
Article
Author:
S. Nakagawa
,
T. Shizu
,
T. Imai
,
M. Nakayama
,
J. Kim
,
H. Minami
,
K. Kadowaki
,
M. Tsujimoto
,
H. Nakao
,
H. Eisaki
,
S. Ishida
,
T. Mochiku
,
Y. Hasegawa
, and
T. Kashiwagi
Journal:
JOURNAL OF APPLIED PHYSICS
Date Uploaded:
26/04/2024
べき乗則で解釈されるスペクトルの閾値及びべき乗数の自動解析方法
Description/Abstract:
べき乗則に従うスペクトルのべき乗数とべき乗の増加が始まる閾値の自動推定方法(1/n-Power Plot法およびShift-Log-Log Plot法)を提案する。1/n-Power Plot法ではべき乗数の事前情報がある場合に利用し、べき乗数の逆数をスペクトルに適用するこ...
Keyword:
Automatic estimation methods
,
Power Law
, and
threshold
Resource Type:
Dataset
Data origin:
others
Author:
柳生 進二郎
,
吉武 道子
, and
長田 貴弘
Journal:
Journal of Surface Analysis
Date Uploaded:
26/04/2024
Comparative Studies on [B(HFIP)<sub>4</sub>]-Based Electrolytes with Mono- and Divalent Cations
Description/Abstract:
We conducted comprehensive comparative studies on the representative WCA-based electrolytes incorporating tetrakis(hexafluoro-iso-propoxy...
Keyword:
borate
,
divalent metal
,
electrolyte
,
monovalent metal
, and
stability
Resource Type:
Article
Author:
Toshihiko Mandai
,
Hiroko Naya
, and
Hyuma Masu
Journal:
The Journal of Physical Chemistry C
Date Uploaded:
20/04/2024
Magnetotransport properties in van der Waals <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mi>R</mml:mi><mml:msub><mml:mi>Te</mml:mi><mml:mn>3</mml:mn></mml:msub></mml:mrow></mml:math> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mo>(</mml:mo><mml:mi>R</mml:mi><mml:mo>=</mml:mo><mml:mi>La</mml:mi><mml:mo>,</mml:mo><mml:mo> </mml:mo><mml:mi>Ce</mml:mi><mml:mo>,</mml:mo><mml:mo> </mml:mo><mml:mi>Tb</mml:mi><mml:mo>)</mml:mo></mml:math>
Description/Abstract:
Rare-earth tritellurides are van-der-Waals antiferromagnets which have been attracting attention as materials not only with high mobility...
Keyword:
Antiferromagnetism
,
Charge density waves
,
Hall effect
,
Magnetic thin films
,
Magnetoresistance
,
Rare-earth magnetic materials
, and
Shubnikov-de Haas effect
Resource Type:
Article
Author:
Tomo Higashihara
,
Ryotaro Asama
,
Ryoya Nakamura
,
Mori Watanabe
,
Nanami Tomoda
,
Thomas Johannes Hasiweder
,
Yuita Fujisawa
,
Yoshinori Okada
,
Takuya Iwasaki
,
Kenji Watanabe
,
Takashi Taniguchi
,
Nan Jiang
, and
Yasuhiro Niimi
Journal:
Physical Review B
Date Uploaded:
19/04/2024
Inelastic neutron scattering studies on the eight-spin zigzag-chain compound <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi>KCu</mml:mi><mml:mn>4</mml:mn></mml:msub><mml:msub><mml:mi mathvariant="normal">P</mml:mi><mml:mn>3</mml:mn></mml:msub><mml:msub><mml:mi mathvariant="normal">O</mml:mi><mml:mn>12</mml:mn></mml:msub></mml:mrow></mml:math>: Confirmation of the validity of a data-driven technique based on machine learning
Description/Abstract:
We performed inelastic neutron scattering (INS) experiments on KCu4P3O12 powder and compared the experimental results with those calculat...
Keyword:
Inelastic neutron scattering
,
data-driven technique based on machine learning
, and
eight-spin zigzag-chain compound KCu4P3O12
Resource Type:
Article
Author:
Masashi Hase
,
Ryo Tamura
,
Koji Hukushima
,
Shinichiro Asai
,
Takatsugu Masuda
,
Shinichi Itoh
, and
Andreas Dönni
Journal:
Physical Review B
Date Uploaded:
18/04/2024
有機アンチ・アンバイポーラトランジスタを用いた多機能論理回路
Description/Abstract:
有機集積回路は、電子タグやヘルスケアーセンサーと組み合わせてリアルタイムの信号を処理するA/Dコンバーターとしての応用が期待されている。しかしながら、単体トランジスタのサイズは未だサブmm程度で集積密度は依然として低い。そのため、素子の微細化だけに依存しない有機集積回路の...
Keyword:
アンチ・アンバイポーラトランジスタ
,
ロジック・イン・メモリ
,
再構成可能2入力論理回路
,
多値論理回路
, and
負性微分トランスコンダクタンス
Resource Type:
Article
Author:
早川 竜馬
,
Panigrahi Debdatta
, and
若山 裕
Journal:
Accounts of Materials & Surface Research
Date Uploaded:
16/04/2024
Anisotropic optical conductivity accompanied by a small energy gap in the one-dimensional thermoelectric telluride <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi mathvariant="normal">Ta</mml:mi><mml:mn>4</mml:mn></mml:msub><mml:msub><mml:mi>SiTe</mml:mi><mml:mn>4</mml:mn></mml:msub></mml:mrow></mml:math>
Description/Abstract:
We investigated the optical properties of single crystals of one-dimensional van der Waals crystal Ta4SiTe4, which exhibited high thermoe...
Keyword:
Optical Conductivity
,
one-dimensional
, and
van der Waals
Resource Type:
Article
Author:
Fumiya Matsunaga
,
Yoshihiko Okamoto
,
Yasunori Yokoyama
,
Kanji Takehana
,
Yasutaka Imanaka
,
Yuto Nakamura
,
Hideo Kishida
,
Shoya Kawano
,
Kazuyuki Matsuhira
, and
Koshi Takenaka
Journal:
Physical Review B
Date Uploaded:
11/04/2024
Bias voltage effects on tunneling magnetoresistance in Fe/MgAl2O4/Fe(001) junctions: Comparative study with Fe/MgO/Fe(001) junctions
Description/Abstract:
スピネルバリアを用いた磁気トンネル接合Fe/MgAl2O4/Feの電圧特性を理論的に解析し、その結果をFe/MgO/Feの電圧特性と比較した。その結果、Fe/MgAl2O4/Feでは電極でのバンド折りたたみが起こるため、磁気抵抗比の電圧耐性がFe/MgO/Feよりも高くなる...
Keyword:
Magnetic tunnel junction
,
Spinel
,
Spintronics
, and
Tunnel magnetoresistance
Resource Type:
Article
Author:
Keisuke Masuda
and
Yoshio Miura
Journal:
Physical Review B
Date Uploaded:
11/04/2024
First-principles study of the anisotropic magneto-Peltier effect
Description/Abstract:
We study theoretically the anisotropic magneto-Peltier effect, which was recently demonstrated experimen-tally. A first-principles-based ...
Keyword:
Peltier effect
,
Spin caloritronics
, and
Spintronics
Resource Type:
Article
Author:
Keisuke Masuda
,
Ken-ichi Uchida
,
Ryo Iguchi
, and
Yoshio Miura
Journal:
Physical Review B
Date Uploaded:
11/04/2024
First-principles study on magnetic tunneling junctions with semiconducting CuInSe2and CuGaSe2barriers
Description/Abstract:
半導体バリアCuInSe2、CuGaSe2を持つ磁気トンネル接合の伝導特性を第一原理計算によって調べた。その結果、両トンネル接合でΔ1状態の波動関数のコヒーレントトンネル現象が生じ、高いMR比が得られることが分かった。
Keyword:
Magnetic tunnel junction
,
Spintronics
, and
Tunnel magnetoresistance
Resource Type:
Article
Author:
Keisuke Masuda
and
Yoshio Miura
Journal:
Japanese Journal of Applied Physics
Date Uploaded:
11/04/2024
Giant interfacial perpendicular magnetic anisotropy in Fe/CuIn1−xGaxSe2 beyond Fe/MgO
Description/Abstract:
We study interfacial magnetocrystalline anisotropies in various Fe/semiconductor heterostructures by means of first-principles calculatio...
Keyword:
Magnetic anisotropy
,
Magnetic tunnel junction
, and
Spintronics
Resource Type:
Article
Author:
Keisuke Masuda
,
Shinya Kasai
,
Yoshio Miura
, and
Kazuhiro Hono
Journal:
Physical Review B
Date Uploaded:
11/04/2024
Perpendicular magnetic anisotropy at the Fe/MgAl2O4 interface: Comparative first-principles study with Fe/MgO
Description/Abstract:
磁気ヘテロ接合Fe/MgAl2O4の界面の磁気異方性について第一原理計算に基づいた解析を行った。垂直磁気異方性が得られることがわかり、その起源についても微視的な解析によって理解が得られた。また、より大きな垂直磁気異方性を得る手段として界面への重元素挿入の可能性についても検討した。
Keyword:
Magnetic anisotropy
,
Magnetic tunnel junction
, and
Spintronics
Resource Type:
Article
Author:
Keisuke Masuda
and
Yoshio Miura
Journal:
Physical Review B
Date Uploaded:
11/04/2024
Exotic magnetism in perovskite KOsO3
Description/Abstract:
A new perovskite KOsO3 has been stabilized under high-pressure and high-temperature conditions. It is cubic at 500 K (Pm-3m) and undergoe...
Keyword:
KOsO3
Resource Type:
Article
Author:
Jie Chen
,
Hongze Li
,
Javier Gainza
,
Angel Munoz
,
Jose A. Alonso
,
Jue Liu
,
Yu-Sheng Chen
,
ベリック アレクセイ
,
山浦 一成
,
Jiaming He
,
Xinyu Li
,
John B. Goodenough
, and
J.-S. Zhou
Journal:
PHYSICAL REVIEW LETTERS
Date Uploaded:
10/04/2024
Chemical-substitution-driven giant anomalous Hall and Nernst effects in magnetic cubic Heusler compounds
Description/Abstract:
Chemical substitution efficiently optimizes the physical properties of Heusler compounds, especially their anomalous transport properties...
Keyword:
Anomalous Hall conductivity
,
Anomalous Nernst conductivity
,
Heusler compounds
, and
High-throughput screening
Resource Type:
Article
Author:
Guangzong Xing
,
Keisuke Masuda
,
Terumasa Tadano
, and
Yoshio Miura
Journal:
Acta Materialia
Date Uploaded:
09/04/2024
Critical current improvement and resistance evaluation of superconducting joint between Bi2223 tapes
Description/Abstract:
We improved the critical current (Ic) of the superconducting joint between the Bi2223 tapes by introducing the two-step sintering process...
Keyword:
Superconducting joint
Resource Type:
Article
Author:
Y Takeda
,
K Kobayashi
,
A Uchida
,
H Kitaguchi
,
G Nishijima
,
Y Yanagisawa
,
T Nakashima
,
S Yamade
,
S Kobayashi
,
T Kato
,
S Nakamura
,
T Motoki
, and
J Shimoyama
Journal:
Superconductor Science and Technology
Date Uploaded:
05/04/2024
Development of a Persistent Current Mode 9.39 T (400 MHz) LTS/Bi-2223 NMR Magnet With a Bi-2223 Superconducting Joint
Description/Abstract:
We developed and operated a persistent current (PC) mode 9.39 T (400 MHz for 1H NMR) LTS/Bi-2223 NMR magnet using a Bi-2223 insert coil w...
Keyword:
Persistent current
Resource Type:
Article
Author:
Y. Takeda
,
Y. Suetomi
,
U. Nakai
,
R. Piao
,
Y. Matsutake
,
T. Yagai
,
T. Motoki
,
J. Shimoyama
,
M. Hamada
,
K. Saito
, and
Y. Yanagisawa
Journal:
IEEE Transactions on Applied Superconductivity
Date Uploaded:
05/04/2024
Review of the temporal stability of the magnetic field for ultra-high field superconducting magnets with a particular focus on superconducting joints between HTS conductors
Description/Abstract:
Superconducting magnets used in applications such as magnetic resonance imaging (MRI) and nuclear magnetic resonance (NMR) require signif...
Keyword:
Superconducting joint
Resource Type:
Article
Author:
Y Takeda
,
H Maeda
,
K Ohki
, and
Y Yanagisawa
Journal:
Superconductor Science and Technology
Date Uploaded:
05/04/2024
Consideration of Magnetic Flux Distribution in Multi−Filamented YBa<sub>2</sub>Cu<sub>3</sub>O<sub>7−δ</sub> Films by Controlling Crystal Array Using Surface−Modified Substrate
Description/Abstract:
Large direct currents can flow through REBa2Cu3O7−δ (REBCO) wires without energy loss because of zero resistance. However, they suffer fr...
Keyword:
Multi−filamentary superconductors
Resource Type:
Article
Author:
Hiroki Fujimoto
,
Akiyoshi Matsumoto
,
Shuuichi Ooi
,
Minoru Tachiki
,
Masayoshi Inoue
, and
Ryo Teranishi
Journal:
IEEE Transactions on Applied Superconductivity
Date Uploaded:
05/04/2024
Optimum asymmetry for nanofabricated refractometric sensors at quasi-bound states in the continuum
Description/Abstract:
A symmetry-protected bound state in the continuum (BIC) is one of the bases for high-resolution photonic refractometric sensors that rely...
Keyword:
BIC
,
biosensors
,
bound states in the continuum
, and
metasurfaces
Resource Type:
Article
Author:
Keisuke Watanabe
and
Masanobu Iwanaga
Journal:
Applied Physics Letters
Date Uploaded:
03/04/2024
Quantitative characterization of built-in potential profile across GaAs p–n junctions using Kelvin probe force microscopy with qPlus sensor AFM
Description/Abstract:
The electrostatic potential distribution in materials and devices plays an important role in controlling the behaviors of charge carriers...
Keyword:
GaAs(110)
,
Kelvin probe force microscopy
,
p-n junction
, and
qPlus sensor
Resource Type:
Article
Author:
Nobuyuki Ishida
and
Takaaki Mano
Journal:
Nanotechnology
Date Uploaded:
03/04/2024
Local- and Intermediate-range Partial Structure Study of As–Se Glasses
Description/Abstract:
To investigate the relationship between the partial structures and the stiffness transition in AsxSe1−x glasses, anomalous X-ray scatteri...
Keyword:
chalcogenide glass
and
structure
Resource Type:
Article
Author:
Shinya Hosokawa
,
Jens Rüdiger Stellhorn
,
Nathalie Boudet
,
Nils Blanc
,
Eisuke Magome
,
László Pusztai
,
Shinji Kohara
,
Kazutaka Ikeda
, and
Toshiya Otomo
Journal:
Journal of the Physical Society of Japan
Date Uploaded:
01/04/2024
Experiment and Simulation on Mechanical Behavior in 1/2-Scale Demonstration REBCO Coil System of Skeleton Cyclotron for Cancer Therapy
Description/Abstract:
We have introduced the Skeleton Cyclotron, a high- temperature superconducting (HTS) air-core compact cyclotron designed to produce medic...
Keyword:
Cyclotron
,
High-temperature superconducting magnet
,
Mechanical property
, and
No-insulation coil
Resource Type:
Article
Author:
Hiroshi Ueda
,
Ryota Komae
,
Aoi Yamashita
,
Ryota Inoue
,
SeokBeom Kim
,
So Noguchi
,
Tomonori Watanabe
,
Mitsuhiro Fukuda
,
Gen Nishijima
,
Rui Kumagai
, and
Atsushi Ishiyama
Journal:
IEEE Transactions on Applied Superconductivity
Date Uploaded:
01/04/2024
Ferroic order for anisotropic magnetic dipole term in collinear antiferromagnets of (t2g)4 system
Description/Abstract:
We present the possibility of x-ray magnetic circular dichroism on RuO2 with collinear antiferromagnetism (AFM). Given that the crystal s...
Keyword:
Altermagnetism
,
Magnetism
, and
XMCD
Resource Type:
Article
Author:
Norimasa Sasabe
,
Masaichiro Mizumaki
,
Takayuki Uozumi
, and
Yuichi Yamasaki
Journal:
PHYSICAL REVIEW LETTERS
Date Uploaded:
28/03/2024
PEMFC用架橋化されたスルホン化ポリフェニルスルホン電解質膜(III)
Description/Abstract:
本研究ではPPSUのスルホン化条件の検討、スケールアップ、均一・大面積電解質膜による物性と燃料電池特性について報告する。
Keyword:
スルホン化ポリフェニルスルホン
,
ポリフェニルスルホン
,
架橋化ポリフェニルスルホン膜
, and
高分子形燃料電池
Resource Type:
Presentation
Author:
金 済徳
,
ビンティ ファウジ ファティン バジラ
, and
伊藤 博
Date Uploaded:
28/03/2024
Tailoring photodetection performance of selfpowered Ga2O3 UV solar-blind photodetectors through asymmetric electrodes
Description/Abstract:
Self-powered solar-blind UV detectors are playing an increasingly critical role in the sustainable development of photodetectors with lo...
Keyword:
UV detector
and
gallium oxide
Resource Type:
Article
Author:
Keyun Gu
,
Zilong Zhang
,
Haofei Huang
,
Ke Tang
,
Jian Huang
,
Meiyong Liao
, and
Linjun Wang
Journal:
Journal of Materials Chemistry C
Date Uploaded:
21/03/2024
Oxygen on-site Coulomb energy in Pr1.3−xLa0.7CexCuO4 and Bi2Sr2CaCu2O8+δ and its relation with Heisenberg exchange
Description/Abstract:
We study the electronic structure of electron-doped Pr1.3−x La0.7 Cex CuO4 (PLCCO; Tc = 27 K, x = 0.1) and hole-doped Bi2Sr2CaCu2O8+δ (Bi...
Keyword:
X-ray absorption spectroscopy
,
electronic structure
,
high-Tc superconductor
, and
resonant photoemission spectroscopy
Resource Type:
Article
Author:
A. Chainani
,
M. Horio
,
C.-M. Cheng
,
D. Malterre
,
K. Sheshadri
,
M. Kobayashi
,
K. Horiba
,
H. Kumigashira
,
T. Mizokawa
,
M. Oura
,
M. Taguchi
,
Y. Mori
,
A. Takahashi
,
T. Konno
,
T. Ohgi
,
H. Sato
,
T. Adachi
,
Y. Koike
,
T. Mochiku
,
K. Hirata
,
S. Shin
,
M. K. Wu
, and
A. Fujimori
Journal:
PHYSICAL REVIEW B
Date Uploaded:
21/03/2024
骨代謝に完全に取り込まれる柔らかい骨補填材
Description/Abstract:
骨の化学組成とナノ複合構造を模倣したアパタイト/コラーゲンナノ複合体は粘弾性を示し、完全に骨代謝に取り込まれると言う機能を持っている。本稿では既に上市した多孔体に加え、最近の研究開発について解説する。
Keyword:
Bone void fillers
,
Bone-like nanocomposite
,
Collagen
, and
Hydroxyapatite
Resource Type:
Report
Author:
菊池正紀
Journal:
Ceramics Japan
Date Uploaded:
19/03/2024
バイオセラミックス分野における標準化の取り組み 〜ISO提案を中心に
Description/Abstract:
必要充分な生体模倣環境が検討された測定手法がないため,生体活性セラミックスの特性は工業製品に対する評価法で測定されている.本稿ではこれらを考慮した日本の生体活性セラミックスの国際標準化活動を解説する.
Keyword:
Cell migration property
,
Mechanical property
,
Pore structure
,
Porous bioactive ceramics
, and
Solubility
Resource Type:
Article
Author:
菊池正紀
Journal:
Ceramics Japan
Date Uploaded:
19/03/2024
アパタイト系リン酸カルシウム生体材料の高機能化と新展開
Description/Abstract:
リン酸カルシウム系生体材料の高機能化について,結晶面からのアプローチを述べるとともに,ナノ複合材料によるその実現と応用展開を述べた。さらに,現状廃棄物となっている特異形状を持つバイオミネラルの応用について述べる。
Keyword:
Apatite
,
Biomaterial
,
Biomineral
, and
Eco-material
Resource Type:
Article
Author:
菊池 正紀
and
末次 寧
Journal:
Ceramics Japan
Date Uploaded:
19/03/2024
バイオセラミックスの標準化
Description/Abstract:
バイオセラミックスの生体内での機械特性を模倣する標準と、世界初の再生医療の国際標準である生体内での細胞・組織侵入を模倣する標準を中心にISOの外科用埋没材料の作業部会であるTC 150での日本の活動状況について述べた。
Keyword:
Bioceramics
,
Cell migration
,
Implant
, and
Surgery
Resource Type:
Article
Author:
菊池 正紀
Journal:
Ceramics Japan
Date Uploaded:
19/03/2024
Development of novel bone‐like nanocomposite coating of hydroxyapatite/collagen on titanium by modified electrophoretic deposition
Description/Abstract:
This study demonstrated the application of a modified EPD technique utilizing Mg2+ ions to coat a bone-like hydroxyapatite/collagen nano...
Keyword:
Hydroxyapatite/collagen
,
coating
,
electrophoretic deposition
,
implant
, and
orthodontic device
Resource Type:
Article
Author:
Kaori Iwanami‐Kadowaki
,
Tetsuo Uchikoshi
,
Masayoshi Uezono
,
Masanori Kikuchi
, and
Keiji Moriyama
Journal:
Journal of Biomedical Materials Research Part A
Date Uploaded:
19/03/2024
原子論に基づく次世代マイクロマグネティクスによる 保磁力制御法の開発
Description/Abstract:
永久磁石の保磁力の制御は、高いエネルギー変換効率の実現へ向けて重要な課題である。高温で高保磁力化をめざす研究は数多く行われているが、保磁力の起源は依然としてよく分かっていない。本研究は、原子論を基礎とした新しい方法論を用いて、ジスプロシウム置換効果でネオジム磁石が保磁力増強...
Keyword:
atomistic theory
,
coercivity
,
dysprosium substitution
,
microscopic mechanism
,
neodymium magnets
, and
thermal fluctuation
Resource Type:
Report
Author:
西野 正理
,
早坂 太志
, and
宮下精二
Date Uploaded:
19/03/2024
Regulating the trap distribution of ZnGa2O4:Cr3+ by Li+ /Ga3+ doping for upconversion-like trap energy transfer NIR persistent luminescence
Description/Abstract:
ZnGa2O4:Cr3+ persistent luminescent phosphors (PLPs) have been widely applied in bioimaging and photonics due to their ultra-long near-in...
Keyword:
Cr3+
,
NIR luminescence
, and
Persistent luminescence
Resource Type:
Article
Author:
Junqing Xiahou
,
Qi Zhu
,
Fan Li
,
Minghui Jin
,
Lin Zhu
,
Sai Huang
,
Tao Zhang
,
Xudong Sun
, and
Ji-Guang Li
Journal:
Inorganic Chemistry Frontiers
Date Uploaded:
19/03/2024
Identification of Multiple Cs+ Adsorption Sites in a Hydroxy-interlayered Vermiculite-like Layered Silicate through 133Cs MAS NMR Analysis
Description/Abstract:
133Cs magic angle spinning nuclear magnetic resonance (MAS NMR) spectroscopy revealed two Cs sites in Csadsorbed aluminium altered phlogo...
Keyword:
chemical exchange
,
interlayer wedge
,
mica
, and
phlogopite
Resource Type:
Article
Author:
Masataka Tansho
,
Kenji Tamura
, and
Tadashi Shimizu
Journal:
Chemistry Letters
Date Uploaded:
19/03/2024
Suppression of High Threshold Voltage for Boron-Doped Diamond MOSFETs
Description/Abstract:
In this work, we focus on resolving one of great issues of high threshold voltage (VTH) values for the boron-doped diamond (B-diamond) m...
Keyword:
Boron-doped diamond
Resource Type:
Article
Author:
Jiangwei Liu
,
Tokuyuki Teraji
,
Bo Da
, and
Yasuo Koide
Journal:
IEEE Transactions on Electron Devices
Date Uploaded:
19/03/2024
Thin Membranes using PFSA-Vinylon Intermediate Layer for PEM Fuel Cells
Description/Abstract:
We have developed a PFSA-vinylon laminated ultra-thin membrane, which is easy to handle even for 10 μm or less and can be used for fuel c...
Keyword:
Fuel cells
,
Lamination
,
PFSA
,
PVA
,
Thin membrane
, and
Vinylon
Resource Type:
Poster
Author:
金 済徳
,
Kazuya Yamasaki
, and
Hitoshi Ishimoto
Date Uploaded:
19/03/2024
Atomic position and the chemical state of an active Sn dopant for Sn-doped β-Ga2O3(001)
Description/Abstract:
Snドープ β-Ga2O3(001)のドーパントの原子位置を光電子ホログラフィ法により明らかにした。
Keyword:
Ga2O3
,
b-Ga2O3
, and
dopant
Resource Type:
Article
Author:
Yuhua Tsai
,
Masaaki Kobata
,
Tatsuo Fukuda
,
Hajime Tanida
,
Toru Kobayashi
, and
Yoshiyuki Yamashita
Journal:
Applied Physics Letters
Date Uploaded:
19/03/2024
A Rhombic Dodecahedral Honeycomb Structure with Cation Vacancy Ordering in a !‑Ga2O3 Crystal
Description/Abstract:
Crystal structure of a γ-Ga2O3 layer grown epitaxially on an MgO substrate by a vapor phase transport method was investigated by transmis...
Keyword:
crystal structure
and
gamma-Ga2O3
Resource Type:
Article
Author:
Masanori Mitome
,
Shigemi Kohiki
,
Takuro Nagai
,
Keiji Kurashima
,
Koji Kimoto
, and
Yoshio Bando
Journal:
CRYSTAL GROWTH & DESIGN
Date Uploaded:
05/03/2024
Ionic Liquid Interface as a Cell Scaffold
Description/Abstract:
In sharp contrast to conventional solid/hydrogel platforms, water-immiscible liquids, such as perfluorocarbons and silicones, allow the a...
Keyword:
cell culture
,
gels
,
ionic liquid
,
liquid interface
,
mechanobiology
,
phosphonium
, and
stem cell
Resource Type:
Article
Author:
Takeshi Ueki
,
Koichiro Uto
,
Shota Yamamoto
,
Ryota Tamate
,
Yuji Kamiyama
,
Xiaofang Jia
,
Hidenori Noguchi
,
Kosuke Minami
,
Katsuhiko Ariga
,
Hongxin Wang
, and
Jun Nakanishi
Journal:
Advanced Materials
Date Uploaded:
04/03/2024
Ultrathin specimen preparation by a low energy Ar ion milling method
Description/Abstract:
An ultra low energy ion milling method was used to prepare ultrathin specimen for transmission electron microscope observation. The sampl...
Keyword:
(Zn, Cr) Te
,
Ar-ion milling
,
gamma-Ga2O3
,
low-energy ion beam
,
sample preparation
, and
ultrathin specimen
Resource Type:
Article
Author:
Masanori Mitome
Journal:
MICROSCOPY (JOURNAL OF ELECTRON MICROSCOPY)
Date Uploaded:
04/03/2024
Different Local Structures of Mo and Nb Polyhedra in the Oxide-Ion-Conducting Hexagonal Perovskite-Related Oxide Ba<sub>3</sub>MoNbO<sub>8.5</sub> Revealed by <sup>95</sup>Mo and <sup>93</sup>Nb NMR Measurements
Description/Abstract:
The oxide-ion conductor Ba3MoNbO8.5, the oxide-ion and proton conductor Ba7Nb4MoO20, and their hexagonal perovskite-related oxides are im...
Keyword:
Fuel Cell
,
Gas Sensor
, and
Oxygen Separation
Resource Type:
Article
Author:
Masataka Tansho
,
Atsushi Goto
,
Shinobu Ohki
,
Yuuki Mogami
,
Yuichi Sakuda
,
Yuta Yasui
,
Taito Murakami
,
Kotaro Fujii
,
Takahiro Iijima
, and
Masatomo Yashima
Journal:
The Journal of Physical Chemistry C
Date Uploaded:
04/03/2024
Date Modified:
05/03/2024
高速重イオン衝突による 固体中に埋め込まれた金属ナノ粒子の楕円化変形(後編)
Description/Abstract:
前編では,固体中に埋め込まれた金属ナノ粒子が十数MeV以上の高速重イオン照射により,楕円形さらにナノロッドに変形する現象について紹介した.そして“変形が起こる/起こらない”の条件が,真空中のナノ粒子モデルや電子励起(非弾性)熱スパイク(i-TS)モデルを用いて,ナノ粒子の融...
Keyword:
metal nanoparticle
,
shape elongation
, and
swift heavy ion
Resource Type:
Article
Author:
雨倉 宏
Journal:
しょうとつ
Date Uploaded:
04/03/2024
高速重イオン衝突による 固体中に埋め込まれた金属ナノ粒子の楕円化変形(前編)
Description/Abstract:
シリカガラスなどの固体中に埋め込まれて形成された金属ナノ粒子に対してエネルギー十数MeV以上の高エネルギー重イオン(高速重イオン)を照射すると,照射前はほぼ球形だったナノ粒子がイオンビームと同方向に伸び,葉巻型の回転楕円体(prolate spheroid)のような形に変形...
Keyword:
metal nanoparticle
,
shape elongation
, and
swift heavy ion
Resource Type:
Article
Author:
雨倉 宏
Journal:
しょうとつ
Date Uploaded:
04/03/2024
Transport of intensity equation method and its applications
Description/Abstract:
A phase retrieval technique based on a transport of intensity equation (TIE) is one of the defocus series reconstruction techniques in mi...
Keyword:
boundary conditions
,
phase retrieval
,
quantitative measurements
, and
transport of intensity equation
Resource Type:
Article
Author:
Masanori Mitome
Journal:
Microscopy
Date Uploaded:
04/03/2024
Deformation microstructures in shock-compressed single crystal and powdered rutile
Description/Abstract:
Shock recovery experiments were performed using a single-stage propellant on single crystals 14 and powdered rutile to investigate the he...
Keyword:
Defect structures
,
Deformation
,
Rutile
, and
Shock recovery experiments
Resource Type:
Article
Author:
Yuhei UMEDA
,
Yuma NAGAI
,
Naotaka TOMIOKA
,
Toshimori SEKINE
,
Masashi MIYAKAWA
,
Takamichi KOBAYASHI
,
Hitoshi YUSA
, and
Takuo OKUCHI
Journal:
Journal of Mineralogical and Petrological Sciences
Date Uploaded:
29/02/2024
Diamond Metal-Oxide-Semiconductor Field-effect Transistors on a Large-area Wafer
Description/Abstract:
Diamond-based devices are suitable for high-power, low power-loss, high-frequency, and high-temperature applications. Most of diamond-bas...
Keyword:
diamond
Resource Type:
ProceedingsArticle
Author:
Jiangwei Liu
,
Hirotaka Ohsato
,
Bo Da
, and
Yasuo Koide
Date Uploaded:
27/02/2024
Quantitative measurement of figure of merit for transverse thermoelectric conversion in Fe/Pt metallic multilayers
Description/Abstract:
This study presents a measurement method for determining the figure of merit for transverse thermoelectric conversion (zT) in thin film f...
Keyword:
anomalous Nernst effect
,
dimensionless figure of merit
,
spin caloritronics
, and
time-domain thermoreflectance
Resource Type:
Article
Author:
Takumi Yamazaki
,
Takamasa Hirai
,
Takashi Yagi
,
Yuichiro Yamashita
,
Ken-ichi Uchida
,
Takeshi Seki
, and
Koki Takanashi
Journal:
Physical Review Applied
Date Uploaded:
26/02/2024
Date Modified:
26/02/2024
Statistical approach based on the Stoner-Wohlfarth model for the switching field in a misoriented magnet array
Description/Abstract:
Stoner‒Wohlfarth model (S‒W model) is used to explain the relationship between the external magnetic field and the magnetization reversal...
Keyword:
FePt granular film
and
Magnetizaition switching
Resource Type:
Article
Author:
Donghyeon Lee
,
Jungmin Park
,
Donghyeon Han
,
Suzuki Ippei
,
Takahashi Yukiko
,
Sujung Noh
,
Jisung Lee
,
JoonHyun Kwon
,
Hansaem Lee
, and
Sanghoon Kim
Journal:
Physical Review Applied
Date Uploaded:
21/02/2024
オペランド水素顕微鏡による水素透過の可視化
Description/Abstract:
オペランド水素顕微鏡の開発とそれを用いた金属材料を透過する水素の可視化について、トピックスとして解説を書くよう依頼された。ステンレスの水素透過、局所透過の画像から、結晶粒ごとの水素の拡散係数と透過フラックスの算出、その結果から推測される構造とその中の水素の拡散モデルの提案に...
Keyword:
diffusion model
,
hydrogen permeation
,
hydrogen visualization
, and
stainless steel
Resource Type:
Article
Author:
板倉 明子
and
宮内 直弥
Journal:
金属
Date Uploaded:
14/02/2024
Visualization of Alternating Triangular Domains of Charge Density Waves in 2H-NbSe2 by Scanning Tunneling Microscopy
Description/Abstract:
The charge density wave (CDW) state of 2H-NbSe2 features commensurate domains separated by domain boundaries accompanied by phase slips k...
Keyword:
Charge density waves
,
Scanning tunneling microscopy
, and
Transition metal dichalcogenides
Resource Type:
Article
Author:
Shunsuke Yoshizawa
,
Keisuke Sagisaka
, and
Hideaki Sakata
Journal:
Physical Review Letters
Date Uploaded:
31/01/2024
Transport evidence for twin-boundary pinning of superconducting vortices in FeSe
Description/Abstract:
We provide bulk transport evidence for twin-boundary pinning of vortices in FeSe. We measure interlayer resistance in FeSe in magnetic fi...
Keyword:
FeSe
,
iron-based superconductor
,
twin boundary
, and
vortex pinning
Resource Type:
Article
Author:
Taichi Terashima
,
Hideaki Fujii
,
Yoshitaka Matsushita
,
Shinya Uji
,
Yuji Matsuda
,
Takasada Shibauchi
, and
Shigeru Kasahara
Journal:
Physical Review B
Date Uploaded:
31/01/2024
Date Modified:
31/01/2024
Phonon Lifetime Observation in Epitaxial ScN Film with Inelastic X-Ray Scattering Spectroscopy
Description/Abstract:
Phonon-phonon scattering dominates the thermal properties in nonmetallic materials, and it directly influences device performance in appl...
Keyword:
ScN
and
phonon
Resource Type:
Article
Author:
H. Uchiyama
,
Y. Oshima
,
R. Patterson
,
S. Iwamoto
,
J. Shiomi
, and
K. Shimamura
Journal:
PHYSICAL REVIEW LETTERS
Date Uploaded:
31/01/2024
Epitaxial lateral overgrowth of r-plane α-Ga2O3 with stripe masks along <-12-10>
Description/Abstract:
We demonstrated the epitaxial lateral overgrowth of (-1012) (r-plane) α-Ga2O3 using striped mask pattern along <-12-10>. α-Ga2O3 st...
Keyword:
ELO
,
HVPE
,
dislocation
, and
α-Ga2O3
Resource Type:
Article
Author:
Yuichi Oshima
,
Shingo Yagyu
, and
Takashi Shinohe
Journal:
JOURNAL OF APPLIED PHYSICS
Date Uploaded:
30/01/2024
Date Modified:
01/02/2024
Epitaxial growth of phase-pure e-Ga2O3 by halide vapor phase epitaxy
Description/Abstract:
The halide vapor phase epitaxy of e-Ga2O3 is demonstrated for the first time. The e-Ga2O3 films are grown on GaN (0001), AlN (0001), and ...
Keyword:
HVPE
,
ε-Ga2O3
, and
κ-Ga2O3
Resource Type:
Article
Author:
Yuichi Oshima
,
Encarnación G. Víllora
,
Yoshitaka Matsushita
,
Satoshi Yamamoto
, and
Kiyoshi Shimamura
Journal:
JOURNAL OF APPLIED PHYSICS
Date Uploaded:
30/01/2024
Date Modified:
01/02/2024
Hydride Vapor Phase Epitaxy and characterization of High-Quality ScN epilayers
Description/Abstract:
ScClxとNH3との反応によるHVPEでScNを育成した。成長速度は、原料分圧の増大に伴って最初は増加するが、やがて減少に転じ、最大成長速度は5um/h程度であった。基板は種々試みたが、サファイア(10-12)と(10-10)を用いたときに単一配向のScN(100)および...
Keyword:
HVPE
and
ScN
Resource Type:
Article
Author:
Yuichi Oshima
,
Encarnación G. Víllora
, and
Kiyoshi Shimamura
Journal:
JOURNAL OF APPLIED PHYSICS
Date Uploaded:
30/01/2024
Date Modified:
01/02/2024
Halide Vapor Phase Epitaxy 2—Heteroepitaxial Growth of α- and ɛ-Ga2O3
Description/Abstract:
αおよびε酸化ガリウムのHVPE成長について解説する。
Keyword:
Ga2O3
and
HVPE
Resource Type:
Book
Author:
大島祐一
Journal:
Gallium Oxide: Crystal Growth, Materials Properties, and Devices (Springer)
Date Uploaded:
30/01/2024
X線・中性子小角散乱法及び3次元アトムプローブ法による Cu-Ni-Si合金中のδNi2Si析出相の解析
Description/Abstract:
The strength of Cu-Ni-Si alloy can be improved by finely dispersing a Ni-Si-based compound as a precipitate into the Cu parent phase by h...
Keyword:
Corson alloy
,
atom probe tomography
, and
transmission electron microscopy
Resource Type:
Article
Author:
佐々木 宏和
,
秋谷 俊太
,
三原 邦照
,
大場 洋次郎
,
大沼 正人
,
埋橋 淳
, and
大久保 忠勝
Journal:
Journal of Japan Institute of Copper
Date Uploaded:
30/01/2024
Deformation-Induced Martensitic Transformation at Tensile and Compressive Deformations of High-Carbon Bainitic Steel
Description/Abstract:
Deformation induced martensitic transformation during tensile or compressive deformation of the high-carbon bainitic steel (0.62wt%C-2.02...
Keyword:
bainite
,
compression
,
deformation-induced martensitic transformation
,
high carbon steel
,
in-situ neutron diffraction
,
retained austenite
, and
tension
Resource Type:
Conference Proceeding
Author:
A. Shibata
,
N. Tsuchida
,
S. Harjo
,
T. Inoue
,
T. Kawasaki
,
W. Gong
,
Y. Kimura
, and
R. Ueji
Date Uploaded:
30/01/2024
Date Modified:
31/01/2024
Progress and challenges in the development of ultra-wide bandgap semiconductor α-Ga2O3 toward realizing power device applications
Description/Abstract:
パワー、およびUV応用を指向したα型酸化ガリウムの関連技術の現状と技術課題を俯瞰し、今後の展望を述べる。
Keyword:
epitaxy
,
power device
, and
α-Ga2O3
Resource Type:
Article
Author:
Yuichi Oshima
and
Elaheh Ahmadi
Journal:
APPLIED PHYSICS LETTERS
Date Uploaded:
29/01/2024
Date Modified:
01/02/2024
Materials issues and devices of α- and β-Ga2O3
Description/Abstract:
パワーデバイスに向けたα- および β- Ga2O3の材料およびデバイス開発の最新状況を概観する。
Keyword:
Ga2O3
,
epitaxy
, and
power device
Resource Type:
Article
Author:
Elaheh Ahmadi
and
Yuichi Oshima
Journal:
JOURNAL OF APPLIED PHYSICS
Date Uploaded:
29/01/2024
Date Modified:
01/02/2024
Anomalous Hall effect in the magnetic Weyl semimetal NdAlGe with plateaus observed at low temperatures
Description/Abstract:
In the RAl(Si,Ge) (R: lanthanides) family, both spatial inversion and time-reversal symmetries are broken. This may offer opportunities t...
Keyword:
Anomalous Hall effect, Topological material
Resource Type:
Article
Author:
Naoki Kikugawa
,
Shinya Uji
, and
Taichi Terashima
Journal:
PHYSICAL REVIEW B
Date Uploaded:
26/01/2024
Mechanical Properties of Ultra-Thin Nb3Sn Composite Wires
Description/Abstract:
Mechanical properties of such ultra-thin Nb3Sn wires were evaluated to determine the cabling parameters and mechanical analysis of twiste...
Keyword:
fracture strength
,
Nb3Sn
,
Young’s modulus
, and
tensile test
Resource Type:
Article
Author:
Michinaka Sugano
,
Akihiro Kikuchi
,
Hitoshi Kitaguchi
,
Gen Nishijima
, and
Tsuyoshi Yagai
Journal:
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
Date Uploaded:
25/01/2024
Date Modified:
30/01/2024
Development of Super Fine Strand Nb3Al Cable for SuperKEKB Superconducting Sextupole Magnet System
Description/Abstract:
Along the beamlines of the SuperKEKB main rings, 218 conventional sextupole magnets are installed, and they are used for tuning the chrom...
Keyword:
Nb3Al
,
SuperKEKB
, and
極細線
Resource Type:
Article
Author:
Norihito Ohuchi
,
Akihiro Kikuchi
,
Masaru Yamamoto
,
Xudong Wang
,
Kiyosumi Tsuchiya
,
Kazuyuki Aoki
,
Yasushi Arimoto
,
Toshiyuki Oki
, and
Zhanguo Zong
Journal:
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
Date Uploaded:
25/01/2024
Date Modified:
30/01/2024
Superconducting Properties of a Nb3Sn Bundle Cable Made of Ultra-Fine Wires
Description/Abstract:
We have been developing A15 cables made of ultra-fine wires for high-field superconducting magnets using react-and-wind (R&W) technology....
Keyword:
Nb3Sn
,
Superconducting Properties
, and
Ultra-Fine Wires
Resource Type:
Article
Author:
Xudong Wang
,
Kiyosumi Tsuchiya
,
Akio Terashima
,
Yasuo Iijima
, and
Akihiro Kikuchi
Journal:
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
Date Uploaded:
25/01/2024
Date Modified:
30/01/2024
Strain‐Sensitive On‐Surface Ladderization by Non‐Dehydrogenative Heterocyclization
Description/Abstract:
On-surface cyclodehydrogenation recently became an important reaction to planarize π-conjugated molecules and oligomers. However, the hig...
Keyword:
non‐dehydrogenative heterocyclization
,
on-surface ladderization
, and
strain-sensitive
Resource Type:
Article
Author:
Yujing Ma
,
Kazuma Sugawara
,
Yusuke Ishigaki
,
Kewei Sun
,
Takanori Suzuki
, and
Shigeki Kawai
Journal:
Chemistry – A European Journal
Date Uploaded:
25/01/2024
Improvement of magnetic field detectivity in electrical 1/f noise-dominated tunnel magnetoresistive sensors by AC magnetic field modulation technique
Description/Abstract:
Suppression of 1/f noise in tunnel magnetoresistance (TMR) sensors is a central issue in the realization of magnetic field sensors with u...
Keyword:
1/f noise
,
magnetic sensor
,
noise
, and
tunnel magnetoresistance
Resource Type:
Article
Author:
Tomoya Nakatani
,
Hirofumi Suto
,
Prabhanjan D. Kulkarni
,
Hitoshi Iwasaki
, and
Yuya Sakuraba
Journal:
JOURNAL OF APPLIED PHYSICS
Date Uploaded:
23/01/2024
Date Modified:
16/02/2024
Halide Vapor Phase Epitaxy of twin-free a-Ga2O3 on sapphire (0001) substrates
Description/Abstract:
The halide vapor phase epitaxy of a-Ga2O3 is demonstrated for the first time. The films are twin-free, heteroepitaxially grown on sapphir...
Keyword:
HVPE
and
α-Ga2O3
Resource Type:
Article
Author:
Yuichi Oshima
,
Encarnación G. Víllora
, and
Kiyoshi Shimamura
Journal:
APPLIED PHYSICS EXPRESS
Date Uploaded:
22/01/2024
Date Modified:
22/01/2024
Rapid growth of α-Ga2O3 by HCl-boosted halide vapor phase epitaxy and effect of precursor supply conditions on crystal properties
Description/Abstract:
We investigated the effect of supply conditions of GaCl, O2, and additional HCl on the growth rate of (0001) alpha-Ga2O3 by halide vapor ...
Keyword:
HVPE
and
α-Ga2O3
Resource Type:
Article
Author:
Yuichi Oshima
,
Katsuaki Kawara
,
Takayoshi Oshima
,
Mitsuru Okigawa
, and
Takashi Shinohe
Journal:
SEMICONDUCTOR SCIENCE AND TECHNOLOGY
Date Uploaded:
22/01/2024
Date Modified:
23/01/2024
Growth and etching characteristics of (001) β- Ga2O3 by plasma-assisted molecular beam epitaxy
Description/Abstract:
We investigated the growth characteristics of homoepitaxial (001) b-Ga2O3 by plasma-assisted molecular beam epitaxy.
Keyword:
MBE
and
β-Ga2O3
Resource Type:
Article
Author:
Yuichi Oshima
,
Elaheh Ahmadi
,
Stephen Kaun
,
Feng Wu
, and
James S Speck
Journal:
SEMICONDUCTOR SCIENCE AND TECHNOLOGY
Date Uploaded:
22/01/2024
Date Modified:
23/01/2024
In-plane orientation control of (001) κ-Ga2O3 by epitaxial lateral overgrowth through a geometrical natural selection mechanism
Description/Abstract:
The present work demonstrates a new technique to solve the in-plane rotational domain problem. In the technique, κ-Ga2O3 was grown by epi...
Keyword:
ELO
,
HVPE
,
domain
,
ε-Ga2O3
, and
κ-Ga2O3
Resource Type:
Article
Author:
Yuichi Oshima
,
Katsuaki Kawara
,
Takayoshi Oshima
, and
Takashi Shinohe
Journal:
JAPANESE JOURNAL OF APPLIED PHYSICS
Date Uploaded:
22/01/2024
Date Modified:
23/01/2024
Phase-controlled epitaxial lateral overgrowth of α-Ga2O3 by halide vapor phase epitaxy
Description/Abstract:
We investigated the effect of mask materials on the epitaxial lateral overgrowth (ELO) characteristics of alpha-Ga2O3 and developed an EL...
Keyword:
ELO
,
HVPE
, and
α-Ga2O3
Resource Type:
Article
Author:
Yuichi Oshima
,
Katsuaki Kawara
,
Takayoshi Oshima
,
Mitsuru Okigawa
, and
Takashi Shinohe
Journal:
JAPANESE JOURNAL OF APPLIED PHYSICS
Date Uploaded:
22/01/2024
Date Modified:
23/01/2024
Elimination of threading dislocations in α-Ga2O3 by double layered epitaxial lateral overgrowth
Description/Abstract:
We demonstrated the double layered epitaxial lateral overgrowth (ELO) of α-Ga2O3 by halide vapor phase epitaxy. Patterned masks were prep...
Keyword:
ELO
,
dislocation
, and
α-Ga2O3
Resource Type:
Article
Author:
Katsuaki Kawara
,
Yuichi Oshima
,
Mitsuru Okigawa
, and
Takashi Shinohe
Journal:
Applied Physics Express
Date Uploaded:
22/01/2024
Date Modified:
23/01/2024
Thin-film synthesis of metastable rocksalt MgSnN2 without epitaxial stabilization
Description/Abstract:
スパッタリング法で作製したウルツ鉱型MgSnN2薄膜をベルト型高圧装置を用いることで、高圧相である岩塩型構造に相転移させることに成功した。その際、相転移のエネルギー障壁についても導出することに成功した。
Keyword:
High-pressure heat treatment
,
Rocksalt MgSnN
, and
Wurtzite-to-rocksalt transition
Resource Type:
JournalArticle
Author:
Kaede Makiuchi
,
Fumio Kawamura
,
Junjun Jia
,
Hidenobu Murata
, and
Naoomi Yamada
Journal:
MATERIALS LETTERS
Date Uploaded:
18/01/2024
Self-aligned patterning on β-Ga2O3 substrates via backside-exposure photolithography
Description/Abstract:
β-Ga2O3 has not been patterned using backside-exposure lithography, despite its high potential applications in future power electronics a...
Keyword:
Ga2O3
and
lithography
Resource Type:
Article
Author:
Takayoshi Oshima
Journal:
JAPANESE JOURNAL OF APPLIED PHYSICS
Date Uploaded:
17/01/2024
Date Modified:
24/01/2024
第3元素添加Nb3Sn線材のSn拡散と微細組織
Description/Abstract:
招待解説:元素添加は、Nb3Sn相そのものの物性向上やNb3Sn拡散反応過程での成長動力学に重要な役割を果たしている。本論文では、Snの化学ポテンシャル、拡散反応現象、核生成などの観点から、Nb3Sn層形成における第3元素添加の影響を詳しく解説した。
Keyword:
Nb3Sn reaction
,
chemical potential
,
element addition
, and
grain refinement
Resource Type:
JournalArticle
Author:
伴野 信哉
Journal:
低温工学
Date Uploaded:
17/01/2024
Manipulation of Spin Polarization in Boron-Substituted Graphene Nanoribbons
Description/Abstract:
The design of magnetic topological states due to spin polarization in an extended π carbon system has great potential in spintronics appl...
Keyword:
boron
,
graphene nanoribbons
, and
spin polarization
Resource Type:
Article
Author:
Kewei Sun
,
Orlando J. Silveira
,
Shohei Saito
,
Keisuke Sagisaka
,
Shigehiro Yamaguchi
,
Adam S. Foster
, and
Shigeki Kawai
Journal:
ACS Nano
Date Uploaded:
16/01/2024
Date Modified:
15/02/2024
Modulation of Bi3+ luminescence from broadband green to broadband deep red in Lu2WO6 by Gd3+ doping and its applications in high color rendering index white LED and near-infrared LED
Description/Abstract:
Phosphors that exhibit tunable broadband emissions are highly desired in multi-functional LEDs, including pc-WLEDs and pc-NIR LEDs. In th...
Keyword:
Broadband Bi3+ luminescence
,
Gd3+ doping
, and
Lu2WO6
Resource Type:
JournalArticle
Author:
Xuejiao Wang
,
Xiaowen Feng
,
Maxim S. Molokeev
,
Huiling Zheng
,
Qiushi Wang
,
Chunyan Xu
, and
Ji-Guang Li
Journal:
DALTON TRANSACTIONS
Date Uploaded:
15/01/2024
Cationic pair substitution in LaAlO3:Mn4+ for octahedral-tilting-dependent zero-phonon line
Description/Abstract:
Novel La1-xBaxAl1-xTixO3:0.001Mn4+ (LBAT:0.001Mn4+, x=0-0.2) and La1-yYyAl1-yGayO3:0.001Mn4+ (LYAG:0.001Mn4+, y=0-0.2) samples were succe...
Keyword:
Cation pair substitution
,
LaAlO3
,
Mn4+ luminescence
, and
Zero phonon line
Resource Type:
JournalArticle
Author:
Siyuan Li
,
Chenyu Zhang
,
Qi Zhu
, and
Ji-Guang Li
Journal:
Inorganic Chemistry Frontiers
Date Uploaded:
15/01/2024
Pressureless sintering of LRH nanoplates on amorphous alumina for near-infrared GAP:Mn4+ transparent ceramic film
Description/Abstract:
We developed a pressureless sintering method to prepare GdAlO3: Mn (GAP: Mn) transparent ceramic films, which were prepared by spin coati...
Keyword:
GdAlO3
,
Interface reaction
,
Layered rare-earth hydroxide
,
Mn4+
, and
Transparent ceramics
Resource Type:
JournalArticle
Author:
Jing Yao
,
Lu Chen
,
Qi Zhu
, and
Ji‐Guang Li
Journal:
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
Date Uploaded:
15/01/2024
Gate-modulated reflectance spectroscopy for detecting excitonic states in two-dimensional semiconductors
Description/Abstract:
We have developed a microspectroscopy technique for measuring gate-modulated reflectance to probe excitonic states in two-dimensional tra...
Keyword:
2D materials
,
excitons
, and
modulation spectroscopy
Resource Type:
Article
Author:
Mengsong Xue
,
Kenji Watanabe
,
Takashi Taniguchi
, and
Ryo Kitaura
Journal:
APPLIED PHYSICS LETTERS
Date Uploaded:
12/01/2024
Date Modified:
15/01/2024
Composition determination of beta-(AlxGa1-x)2O3 layers coherently grown on (010) beta-Ga2O3 substrates by high-resolution x-ray diffraction
Description/Abstract:
We demonstrate x-ray diffraction based composition estimation of b-(AlxGa1-x)2O3 coherently grown on (010) b-Ga2O3. The relation between ...
Keyword:
atom probe
,
composition
, and
β-Ga2O3
Resource Type:
Article
Author:
Yuichi Oshima
,
Elaheh Ahmadi
,
Stefan C. Badescu
,
Feng Wu
, and
James S. Speck
Journal:
APPLIED PHYSICS EXPRESS
Date Uploaded:
11/01/2024
Date Modified:
24/01/2024
Time-resolved imaging and analysis of the electron beam-induced formation of an open-cage metallo-azafullerene
Description/Abstract:
The bottom-up synthesis of strained hollow cage structures, such as fullerenes, using traditional thermal or photochemical methods remain...
Keyword:
DFT-modeling
,
cinematic chemistry
,
molecular imaging
,
radiation chemistry
,
single-molecule dynamics
, and
transmission electron microscopy
Resource Type:
Article
Author:
Helen Hoelzel
,
Sol Lee
,
Konstantin Yu. Amsharov
,
Norbert Jux
,
Koji Harano
,
Eiichi Nakamura
, and
Dominik Lungerich
Journal:
Nature Chemistry
Date Uploaded:
05/01/2024
Effect of Ca Addition on the Oxidation Resistance of Ni–Al Alloy
Description/Abstract:
Ni-base superalloys are known for their high temperature oxidation resistance, however, impurity of S at ppm order can significantly dec...
Keyword:
Ni-base superalloy
,
oxidation resistance
, and
sulfur segregation
Resource Type:
Article
Author:
Chihiro Tabata
,
Kyoko Kawagishi
,
Tadaharu Yokokawa
,
Jun Uzuhashi
,
Tadakatsu Ohkubo
,
Hiroshi Harada
, and
Shinsuke Suzuki
Journal:
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
Date Uploaded:
05/01/2024
Review of Damage Evaluation and Remanufacturing for Material Sustainability
Description/Abstract:
Product remanufacturing offers a path to achieving the United Nation's sustainable development goals. In the rapidly expanding constructi...
Keyword:
Damage evalution; Remanufacturing; Material sustainability; Carburized gear; Tempered martensite; Non-destructive test
Resource Type:
Poster
Author:
Masao HAYAKAWA
Date Uploaded:
04/01/2024
Date Modified:
04/01/2024
レーザー焼入れによる浸炭歯車鋼のリマニュファクチャリング技術の開発
Description/Abstract:
SDGsの達成に向けた世界的な取り組みとともに,循環経済に根ざしたリマニュファクチャリングが大いに注目されている.建設機械業界では,製品のリマニュファクチャリングが環境負荷やメンテナンスコストの低減に大きな効果があるため,その産業規模が急激に拡大している.建設機械機器では油...
Keyword:
リマニュファクチャリング、歯車、浸炭、レーザー焼入れ、摺動疲労、焼戻しマルテンサイト
Resource Type:
Presentation
Author:
金澤智尚
,
早川 正夫
,
ヴィナスダン
,
田原佑規
,
畑 典仁
, and
吉本光宏
Date Uploaded:
04/01/2024
Date Modified:
04/01/2024
Fatigue strength evaluation of 1180MPa class recycled steel
Description/Abstract:
In this study, we evaluated the material properties of 1180MPa class recycled steel sheets created from waste scrap and conducted two typ...
Keyword:
High-strength recycled steel; 10^7 cycles fatigue limit; Stress ratio; Fatigue limit diagram
Resource Type:
Presentation
Author:
Nobuo NAGASHIMA
,
Masao HAYAKAWA
,
Kotobu NAGAI
,
Hiroyuki MASUDA
,
Eizaburo NAKANISHI
,
Noriyuki NAKANISHI
, and
Masaru IWASAKI
Date Uploaded:
28/12/2023
Date Modified:
04/01/2024
Challenge and Innovations of Carburized Gears for Remanufacturing
Description/Abstract:
In recent years, the mass consumption of resources and climate change have become global social issues. Remanufacturing, which is categor...
Keyword:
Remanufacturing; Carburized gear; Tempered martensite; Non-destructive testing; Laser hardening
Resource Type:
Presentation
Author:
Tomohisa Kanazawa
,
Masao Hayakawa
,
Akinori Kondo
,
Dan Vinas
,
Mitsuhiro Yoshimoto
, and
Masakazu Nakasako
Date Uploaded:
28/12/2023
Date Modified:
04/01/2024
耐熱鋼の亜臨界水・超臨界水酸化挙動
Description/Abstract:
9Crフェライト耐熱鋼と18Cr-8Niオーステナイト(SUS304)鋼,耐酸化性と高温強度向上を図って開発された15Crフェライト鋼を,650℃の水蒸気(圧力0.5MPa),亜臨界水(同10.2MPa),超臨界水(同22.7MPa)に種々の時間曝し,酸化に伴う重量変化から...
Keyword:
9Cr鋼
,
SUS304鋼
,
圧力
,
水蒸気酸化
, and
酸化速度定数
Resource Type:
Article
Author:
戸田 佳明
and
小畠 仁奈
Journal:
ボイラ研究
Date Uploaded:
27/12/2023
High-Throughput Computational Screening of Two-Dimensional Semiconductors
Description/Abstract:
By performing high-throughput first-principles calculations combined with a semiempirical van der Waals dispersion correction, we have sc...
Keyword:
2D Materials
and
DFT
Resource Type:
Article
Author:
Vei Wang
,
Gang Tang
,
Ya-Chao Liu
,
Ren-Tao Wang
,
Hiroshi Mizuseki
,
Yoshiyuki Kawazoe
,
Jun Nara
, and
Wen Tong Geng
Journal:
Journal of Physical Chemistry Letters
Date Uploaded:
25/12/2023
Phase transitions and slow spin dynamics of slightly inverted A-site spinel CoAl2−xGaxO4
Description/Abstract:
We report the properties of an A-site spinel magnet, CoAl2−xGaxO4, and analyze its anomalous, low-temperature magnetic behavior, which is...
Keyword:
magnetic frustration
,
magnetic phase diagram
,
quantum critical point
, and
thermoremanent magnetization
Resource Type:
Article
Author:
T Naka
,
J Valenta
,
T Nakane
,
S Ishii
,
M Nakayama
,
H Mamiya
,
K Takehana
,
N Tsujii
,
Y Imanaka
,
Y Matsushita
,
H Abe
,
T Uchikoshi
, and
H Yusa
Journal:
JOURNAL OF PHYSICS-CONDENSED MATTER
Date Uploaded:
25/12/2023
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