Temperature dependence of anisotropic magneto-Seebeck effect in NiPt alloys

Takamasa Hirai; Rajkumar Modak; Asuka Miura; Takeshi Seki; Koki Takanashi; Ken Ichi Uchida

doi:10.35848/1882-0786/ac057c

Temperature dependence of anisotropic magneto-Seebeck effect in NiPt alloys

Takamasa Hirai, Rajkumar Modak, Asuka Miura, Takeshi Seki, Koki Takanashi, Ken Ichi Uchida

Research output: Contribution to journal › Article › peer-review

Abstract

This letter reports systematic measurements of the anisotropic magneto-Seebeck effect (AMSE) of ferromagnetic Ni100-x Pt x alloys with different Pt concentration ratios x. By simultaneously measuring an applied temperature difference and generated thermopower at the same positions, the Seebeck coefficient under a magnetic field is quantified with high reliability at the temperatures ranging from 300 to 550 K. The AMSE of the alloys is maximized at around x = 5 at% in the high temperature range and disappears at the temperatures lower than the Curie temperature. The systematic dataset and experimental techniques established here will invigorate spin caloritronics studies.

Original language	English
Article number	073001
Journal	Applied Physics Express
Volume	14
Issue number	7
DOIs	https://doi.org/10.35848/1882-0786/ac057c
Publication status	Published - 2021 Jul

ASJC Scopus subject areas

Engineering(all)
Physics and Astronomy(all)

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@article{baaf44c1f3b846fa82c5ebe8ec781701,

title = "Temperature dependence of anisotropic magneto-Seebeck effect in NiPt alloys",

abstract = "This letter reports systematic measurements of the anisotropic magneto-Seebeck effect (AMSE) of ferromagnetic Ni100-x Pt x alloys with different Pt concentration ratios x. By simultaneously measuring an applied temperature difference and generated thermopower at the same positions, the Seebeck coefficient under a magnetic field is quantified with high reliability at the temperatures ranging from 300 to 550 K. The AMSE of the alloys is maximized at around x = 5 at% in the high temperature range and disappears at the temperatures lower than the Curie temperature. The systematic dataset and experimental techniques established here will invigorate spin caloritronics studies. ",

author = "Takamasa Hirai and Rajkumar Modak and Asuka Miura and Takeshi Seki and Koki Takanashi and Uchida, {Ken Ichi}",

note = "Funding Information: The authors thank R. Iguchi for valuable discussions and M. Isomura for technical supports. This work was supported by CREST {"}Creation of Innovative Core Technologies for Nano-enabled Thermal Management{"} (No. JPMJCR17I1) from JST, Japan; Grant-in-Aid for Scientific Research (S) (No. 18H05246) and Grant-in-Aid for Scientific Research (B) (No. 19H02585) from JSPS KAKENHI, Japan; and NEC Corporation. T.H. and A.M. are supported by JSPS through the Research Fellowship for Young Scientists (Nos. 20J00365 and 18J02115). Publisher Copyright: {\textcopyright} 2021 The Japan Society of Applied Physics.",

year = "2021",

month = jul,

doi = "10.35848/1882-0786/ac057c",

language = "English",

volume = "14",

journal = "Applied Physics Express",

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publisher = "Japan Society of Applied Physics",

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T1 - Temperature dependence of anisotropic magneto-Seebeck effect in NiPt alloys

AU - Hirai, Takamasa

AU - Modak, Rajkumar

AU - Miura, Asuka

AU - Seki, Takeshi

AU - Takanashi, Koki

AU - Uchida, Ken Ichi

N1 - Funding Information: The authors thank R. Iguchi for valuable discussions and M. Isomura for technical supports. This work was supported by CREST "Creation of Innovative Core Technologies for Nano-enabled Thermal Management" (No. JPMJCR17I1) from JST, Japan; Grant-in-Aid for Scientific Research (S) (No. 18H05246) and Grant-in-Aid for Scientific Research (B) (No. 19H02585) from JSPS KAKENHI, Japan; and NEC Corporation. T.H. and A.M. are supported by JSPS through the Research Fellowship for Young Scientists (Nos. 20J00365 and 18J02115). Publisher Copyright: © 2021 The Japan Society of Applied Physics.

PY - 2021/7

Y1 - 2021/7

N2 - This letter reports systematic measurements of the anisotropic magneto-Seebeck effect (AMSE) of ferromagnetic Ni100-x Pt x alloys with different Pt concentration ratios x. By simultaneously measuring an applied temperature difference and generated thermopower at the same positions, the Seebeck coefficient under a magnetic field is quantified with high reliability at the temperatures ranging from 300 to 550 K. The AMSE of the alloys is maximized at around x = 5 at% in the high temperature range and disappears at the temperatures lower than the Curie temperature. The systematic dataset and experimental techniques established here will invigorate spin caloritronics studies.

AB - This letter reports systematic measurements of the anisotropic magneto-Seebeck effect (AMSE) of ferromagnetic Ni100-x Pt x alloys with different Pt concentration ratios x. By simultaneously measuring an applied temperature difference and generated thermopower at the same positions, the Seebeck coefficient under a magnetic field is quantified with high reliability at the temperatures ranging from 300 to 550 K. The AMSE of the alloys is maximized at around x = 5 at% in the high temperature range and disappears at the temperatures lower than the Curie temperature. The systematic dataset and experimental techniques established here will invigorate spin caloritronics studies.

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JF - Applied Physics Express

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IS - 7

M1 - 073001

ER -

Temperature dependence of anisotropic magneto-Seebeck effect in NiPt alloys

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