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Takamasa Hirai
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Enhancement of Transverse Thermoelectric Conversion by Interface-Induced Spin Current in Ferromagnetic Metal/Nonmagnetic Insulator Hybrid-Structure
Description/Abstract:
Transverse thermoelectric conversion phenomena including the anomalous Ettingshausen effect (AEE) and anomalous Nernst effect (ANE) in ma...
Keyword:
Rashba-Edelstein effect
,
anomalous Ettingshausen effect
,
spin Peltier effect
, and
transverse thermoelectric conversion
Resource Type:
Article
Author:
Takuma Itoh
,
Yusuke Kozuka
,
Takamasa Hirai
, and
Ken-ichi Uchida
Journal:
Advanced Functional Materials
Date Uploaded:
05/12/2024
Hybridizing anomalous Nernst effect in artificially tilted multilayer based on magnetic topological material
Description/Abstract:
Transverse thermoelectric conversion holds significant potential in addressing complex challenges faced by classical Seebeck/Peltier modu...
Keyword:
anomalous Nernst effect
,
artificially tilted multilayer
,
off-diagonal Seebeck effect
, and
transverse thermoelectric conversion
Resource Type:
Article
Author:
Takamasa Hirai
,
Fuyuki Ando
,
Hossein Sepehri-Amin
, and
Ken-ichi Uchida
Journal:
Nature Communications
Date Uploaded:
23/11/2024
High‐Throughput Optimization of Magnetoresistance Materials Based on Lock‐In Thermography
Description/Abstract:
With the giant magnetoresistance (GMR) effect serving as a vital component in modern spintronic technologies, researchers are dedicating ...
Keyword:
Giant magnetoresistance
and
Lock-in thermography
Resource Type:
Article
Author:
Rajkumar Modak
,
Takamasa Hirai
,
Yuya Sakuraba
,
Seiji Mitani
,
Koichi Oyanagi
,
Takumi Yamazaki
,
Takeshi Seki
, and
Ken‐ichi Uchida
Journal:
Advanced Physics Research
Date Uploaded:
11/11/2024
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
Bipolarity of large anomalous Nernst effect in Weyl magnet-based alloy films
Description/Abstract:
A thermopile device converts thermal energy to electrical energy. Controlling the polarity of the thermoelectric voltage that such a devi...
Keyword:
anomalous Nernst effect
and
topological materials
Resource Type:
Article
Author:
Shun Noguchi
,
Kohei Fujiwara
,
Yuki Yanagi
,
Michi-To Suzuki
,
Takamasa Hirai
,
Takeshi Seki
,
Ken-ichi Uchida
, and
Atsushi Tsukazaki
Journal:
Nature Physics
Date Uploaded:
07/07/2024
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
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
Permanent-magnet-based transverse thermoelectric generator with high fill factor driven by anomalous Nernst effect
Description/Abstract:
A transverse thermoelectric generator for magnetic-field-free and high-density power generation utilizing the anomalous Nernst effect is ...
Keyword:
Energy harvesting
,
Infrared imaging
,
Magnetic materials
,
Thermoelectric effects
, and
Thermoelectric generator
Resource Type:
Article
Author:
Fuyuki Ando
,
Takamasa Hirai
, and
Ken-ichi Uchida
Journal:
APL Energy
Date Uploaded:
26/01/2024
Hybrid Transverse Magneto‐Thermoelectric Cooling in Artificially Tilted Multilayers
Description/Abstract:
In artificially tilted multilayers comprising two different conductors that are alternately and obliquely stacked, transverse thermoelect...
Keyword:
Ettingshausen effect
,
artificially tilted multilayers
,
lock-in thermography
,
magneto-Peltier effect
,
permanent magnets
, and
transverse thermoelectrics
Resource Type:
Article
Author:
Ken‐ichi Uchida
,
Takamasa Hirai
,
Fuyuki Ando
, and
Hossein Sepehri‐Amin
Journal:
Advanced Energy Materials
Date Uploaded:
23/01/2024
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
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Creative Commons BY Attribution 4.0 International
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Takamasa Hirai
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MEXT | JST | Exploratory Research for Advanced Technology
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