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Mechanism of ion track formation in silicon by much lower energy deposition than the formation threshold
Description/Abstract:
The mechanism of the track formation in crystalline silicon (c-Si) under C60 ion irradiation with the medium energies of 1-9 MeV is discu...
Keyword:
C60 ion
,
ion track
,
silicon
,
swift heavy ion
,
synergy effect
, and
track recrystallization
Resource Type:
Article
Author:
H Amekura
,
K Narumi
,
A Chiba
,
Y Hirano
,
K Yamada
,
S Yamamoto
,
N Ishikawa
,
N Okubo
,
M Toulemonde
, and
Y Saitoh
Journal:
PHYSICA SCRIPTA
Date Uploaded:
10/05/2023
Understanding magnetocrystalline anisotropy based on orbital and quadrupole moments
Description/Abstract:
Understanding magnetocrystalline anisotropy (MCA) is fundamentally important for developing novel magnetic materials. Therefore, clarifyi...
Keyword:
magnetocrystalline anisotropy, orbital moment, quadrupole moment, first-principles calculation, spintronics, interface
Resource Type:
Article
Author:
Yoshio Miura
and
Jun Okabayashi
Journal:
Journal of Physics: Condensed Matter
Date Uploaded:
10/05/2023
Implementation strategies in phonopy and phono3py
Description/Abstract:
Scientific simulation codes are public property sustained by the community. Modern technology allows anyone to join scientific software p...
Keyword:
Phonon calculation
Resource Type:
Article
Author:
Atsushi Togo
,
Laurent Chaput
,
Terumasa Tadano
, and
Isao Tanaka
Journal:
JOURNAL OF PHYSICS-CONDENSED MATTER
Date Uploaded:
08/08/2023
Elastocaloric effect of shape memory polymers in elastic response regime
Description/Abstract:
The solid-state cooling/heating technology based on the elastocaloric effect is one of the promising alternatives to vapor compression sy...
Keyword:
Elastocaloric effect
and
Shape memory polymer
Resource Type:
Article
Author:
Takamasa Hirai
,
Koichiro Uto
,
Mitsuhiro Ebara
, and
Ken-ichi Uchida
Journal:
Journal of Physics-Energy
Date Uploaded:
17/10/2023
Hydrogen detection using membrane-type surface stress sensor
Description/Abstract:
This study shows a possibility of the application of a membrane-type surface stress sensor (MSS) with a Pd film to a hydrogen sensor. It ...
Keyword:
Hydrogen sensor
and
membrane-type surface stress sensor
Resource Type:
Article
Author:
Taro Yakabe
,
Gaku Imamura
,
Genki Yoshikawa
,
Masahiro Kitajima
, and
Akiko N Itakura
Journal:
Journal of Physics Communications
Date Uploaded:
26/10/2023
Fabrication of coherent γ-Al2O3/Ga2O3 superlattices on MgAl2O4 substrates
Description/Abstract:
We succeeded in fabricating 10-period coherent γ Al2O3/Ga2O3 superlattices (SLs) on MgAl2O4 substrates by molecular beam epitaxy. By vary...
Keyword:
Ga2O3
and
Superlattice
Resource Type:
Article
Author:
Yuji Kato
,
Masataka Imura
,
Yoshiko Nakayama
,
Masaki Takeguchi
, and
Takayoshi Oshima
Journal:
APPLIED PHYSICS EXPRESS
Date Uploaded:
28/11/2023
Date Modified:
28/11/2023
α-Al2O3/Ga2O3 superlattices coherently grown on r-plane sapphire
Description/Abstract:
Ten-period binary α-Al2O3/Ga2O3 superlattices were fabricated on r-plane sapphire substrates by molecular beam epitaxy. By systematic var...
Keyword:
Ga2O3
and
Superlattice
Resource Type:
Article
Author:
Takayoshi Oshima
,
Yuji Kato
,
Masataka Imura
,
Yoshiko Nakayama
, and
Masaki Takeguchi
Journal:
APPLIED PHYSICS EXPRESS
Date Uploaded:
28/11/2023
Date Modified:
28/11/2023
Selective area growth of β-Ga2O3 by HCl-based halide vapor phase epitaxy
Description/Abstract:
We demonstrated selective area growth of β-Ga2O3 by HCl-based halide vapor phase epitaxy on SiO2-masked (001) and (010) β-Ga2O3 substrate...
Keyword:
Ga2O3
and
selective area growth
Resource Type:
Article
Author:
Takayoshi Oshima
and
Yuichi Oshima
Journal:
Applied Physics Express
Date Uploaded:
28/11/2023
Date Modified:
28/11/2023
Topology optimization for piezoresistive nanomechanical surface stress sensors in anisotropic <111> orientations.
Description/Abstract:
MEMS-based piezoresistive nanomechanical sensors are compact sensing platforms widely employed in vapor sensing, environmental monitoring...
Keyword:
anisotropic materials
,
nanomechanical sensors
,
piezoresistive microcantilever
,
surface stress
, and
topology optimization
Resource Type:
Article
Author:
Kosuke Minami
Journal:
Nano Express
Date Uploaded:
04/12/2023
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
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
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
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
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
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
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
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
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
In vitro analysis of insoluble salt formation mechanism associated with Mg corrosion—variations depending on the diffusion environment in model tissue
Description/Abstract:
Magnesium (Mg) alloys have attracted attention as biodegradable metals, but the details of their corrosion behavior under biological env...
Keyword:
Raman spectroscopy
,
corrosion
,
in vitro model tissue
,
insoluble salt precipitation
, and
magnesium
Resource Type:
Article
Author:
Masanobu Hayashi
,
Akiko Yamamoto
,
Takayuki Aizawa
,
Yu Yusa
,
Yoshinaka Shimizu
, and
Yoshimichi Imai
Journal:
Biomedical Materials
Date Uploaded:
24/01/2024
Rutile-type GexSn1−xO2 alloy layers lattice-matched to TiO2 substrates for device applications
Description/Abstract:
We report the characterization and application of mist-CVD-grown rutile-structured GexSn1−xO2 (x = ∼0.53) films lattice-matched to isostr...
Keyword:
GeO2
,
SnO2
, and
TiO2
Resource Type:
Article
Author:
Hitoshi Takane
,
Takayoshi Oshima
,
Takayuki Harada
,
Kentaro Kaneko
, and
Katsuhisa Tanaka
Journal:
Applied Physics Express
Date Uploaded:
30/01/2024
Date Modified:
01/02/2024
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Applied Physics Express
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APPLIED PHYSICS EXPRESS
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