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Tadakatsu Ohkubo
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Characterization of δNi<sub>2</sub>Si Precipitates in Cu-Ni-Si Alloy by Small-Angle X-ray Scattering, Small-Angle Neutron Scattering, and Atom Probe Tomography
Description/Abstract:
The strength of Cu-Ni-Si alloy can be improved by finely dispersing Ni-Si-based compounds as precipitates into the Cu matrix through heat...
Keyword:
atom probe tomography
Resource Type:
Article
Author:
Hirokazu Sasaki
,
Syunta Akiya
,
Kuniteru Mihara
,
Yojiro Oba
,
Masato Onuma
,
Jun Uzuhashi
, and
Tadakatsu Ohkubo
Journal:
MATERIALS TRANSACTIONS
Date Uploaded:
08/01/2025
Ultra-low Gilbert damping and self-induced inverse spin Hall effect in GdFeCo thin films
Description/Abstract:
Ferrimagnetic materials have garnered significant attention due to their broad range of tunabilities and functionalities in spintronics a...
Keyword:
ferrimagnet
,
inverse spin Hall effect
, and
spintronics
Resource Type:
Article
Author:
Jhantu Pradhan
,
M. S. Devapriya
,
Rohiteswar Mondal
,
Jun Uzuhashi
,
Tadakatsu Ohkubo
,
Shinya Kasai
,
Chandrasekhar Murapaka
, and
Arabinda Haldar
Journal:
Journal of Applied Physics
Date Uploaded:
27/12/2024
Large perpendicular magnetic anisotropy at Fe/rock-salt-type Cr-oxide interface synthesized via oxygen-driven chemical layer exchange process
Description/Abstract:
Perpendicular magnetic anisotropy (PMA) induced at the interface of the metallic magnetic layer/oxide layer plays a major role in scaling...
Keyword:
CrO
,
epitaxial growth
,
perpendicular magnetic anisotropy
, and
spintronics
Resource Type:
Article
Author:
Yuki Iida
,
Qingyi Xiang
,
Thomas Scheike
,
Zhenchao Wen
,
Jun Okabayashi
,
Jun Uzuhashi
,
Tadakatsu Ohkubo
,
Kazuhiro Hono
,
Hiroaki Sukegawa
, and
Seiji Mitani
Journal:
APL Materials
Date Uploaded:
10/12/2024
Spin and orbit torques in artificial alloy thin films and heterostructures
Description/Abstract:
In this talk, we present enhanced spin and orbital torque efficiencies in well-engineered artificial heterostructures and alloy thin film...
Keyword:
Artificial alloy thin films
and
Spin-Orbit Torques
Resource Type:
Presentation
Author:
Zhenchao Wen
,
Tadakatsu Ohkubo
,
Hiroaki Sukegawa
, and
Seiji Mitani
Date Uploaded:
03/12/2024
Spin-orbit torque driven by interfacial chemistry in topological BiSb/NiFe bilayers with Ti insertion
Description/Abstract:
In this work, BiSb thin films with a NiFe ferromagnetic layer were prepared to explore the impact of Ti spacer insertion on SOT efficienc...
Keyword:
Spin-orbit torque, interfacial chemistry, topological BiSb
Resource Type:
Poster
Author:
Talluri Manoj
,
Zhenchao Wen
,
Jun Uzuhashi
,
Tadakatsu Ohkubo
,
Hiroaki Sukegawa
,
Chandrasekhar Murapaka
,
Brian York
,
Xiaoyong Liu
,
Quang Le
, and
Seiji Mitani
Date Uploaded:
29/11/2024
Incommensurate superlattice modulation surviving down to an atomic scale in sputter-deposited Co/Pt(111) epitaxial multilayered films
Description/Abstract:
We report the structural feature of sputter-deposited epitaxial [Co (0.2 nm)/Pt (0.2–1.0 nm)] multilayered films prepared with various pe...
Keyword:
epitaxial growth
,
magnetic thin films
, and
perpendicular magnetization
Resource Type:
Article
Author:
Jieyuan Song
,
Thomas Scheike
,
Cong He
,
Zhenchao Wen
,
Tadakatsu Ohkubo
,
Kwangseok Kim
,
Hiroaki Sukegawa
, and
Seiji Mitani
Journal:
APL Materials
Date Uploaded:
23/11/2024
Combined effect of interstitial-substitutional elements on dislocation dynamics in nitrogen-added austenitic stainless steels
Description/Abstract:
Combined addition of interstitial-substitutional elements has been acknowledged to contribute to the increase in the strengths of steels....
Keyword:
3D atom probe
and
Steel
Resource Type:
Article
Author:
Yasuhito Kawahara
,
Shunya Kobatake
,
Kenji Kaneko
,
Taisuke Sasaki
,
Tadakatsu Ohkubo
,
Chikako Takushima
, and
Jun-ichi Hamada
Journal:
Scientific Reports
Date Uploaded:
19/11/2024
Creation of flexible spin-caloritronic material with giant transverse thermoelectric conversion by nanostructure engineering
Description/Abstract:
Functional materials such as magnetic, thermoelectric, and battery materials have been revolutionized through nanostructure engineering....
Keyword:
Anomalous Nernst effect
,
Nanostructure
,
spin-caloritronic
, and
transverse thermoelectric conversion
Resource Type:
Article
Author:
Ravi Gautam
,
Takamasa Hirai
,
Abdulkareem Alasli
,
Hosei Nagano
,
Tadakatsu Ohkubo
,
Ken-ichi Uchida
, and
Hossein Sepehri-Amin
Journal:
Nature Communications
Date Uploaded:
11/11/2024
Improvement of Oxidation Resistance for Ni-Base Single Crystal Superalloy TMS-238 by Suppression of Sb Segregation at Oxide/Substrate Interface Using CaO
Description/Abstract:
Impurity Sb degrades the oxidation resistance of Ni-base superalloys after Al2O3 crucible melting. The purpose of this study is to clarif...
Keyword:
Ni-base superalloy
Resource Type:
Article
Author:
Hirotoshi Maezawa
,
Chihiro Tabata
,
Yuji Takata
,
Jun Uzuhashi
,
Tadakatsu Ohkubo
,
Tadaharu Yokokawa
,
Hiroshi Harada
,
Kyoko Kawagishi
, and
Shinsuke Suzuki
Journal:
Metallurgical and Materials Transactions B
Date Uploaded:
07/11/2024
Tomography-based digital twin of Nd-Fe-B permanent magnets
Description/Abstract:
Many functional materials are designed at the multiscale level. To properly simulate their physical properties, large and sophisticated c...
Keyword:
Digital Twin
and
Hard magnets
Resource Type:
Article
Author:
Anton Bolyachkin
,
Ekaterina Dengina
,
Nikita Kulesh
,
Xin Tang
,
Hossein Sepehri-Amin
,
Tadakatsu Ohkubo
, and
Kazuhiro Hono
Journal:
npj Computational Materials
Date Uploaded:
21/10/2024
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Tadakatsu Ohkubo
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