Journal article Transverse magneto-thermoelectric properties of Fe2CoSi alloy and Fe2CoSi–Pt composite films
Subrata Biswas (author) (Search by this author)
;
Rajkumar Modak (author) (Search by this author)
ORCID https://orcid.org/0000-0001-7939-3289
National Institute for Materials Science
SAMURAI NIMS Researchers Directory SAMURAI
ORCID SAMURAI ;
Takamasa Hirai (author) (Search by this author)
ORCID https://orcid.org/0000-0002-5577-8018
National Institute for Materials Science
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ORCID SAMURAI ;
Ananthakrishnan Srinivasan (author) (Search by this author)
;
Perumal Alagarsamy (author) (Search by this author)
;
Ken-ichi Uchida (author) (Search by this author)
ORCID https://orcid.org/0000-0001-7680-3051
National Institute for Materials Science
SAMURAI NIMS Researchers Directory SAMURAI
ORCID SAMURAI
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Subrata Biswas, Rajkumar Modak, Takamasa Hirai, Ananthakrishnan Srinivasan, Perumal Alagarsamy, Ken-ichi Uchida. Transverse magneto-thermoelectric properties of Fe2CoSi alloy and Fe2CoSi–Pt composite films. Journal of Applied Physics. 2026, 139 (14), 145102. https://doi.org/10.1063/5.0314309

Description:

(abstract)

We report a systematic evaluation of the effects of post-deposition annealing temperature and structural ordering on the anomalous Nernst effect (ANE) in Fe2CoSi (FCS) Heusler alloy thin films. The study reveals that amorphous/disordered FCS films exhibit a larger anomalous Nernst coefficient (SANE) compared to their crystalline counterparts, in stark contrast to conventional Co-based Heusler alloys, which typically show maximum SANE in highly ordered structures. Furthermore, as a strategy for enhancing transverse thermoelectric properties, we explore (FCS)100−xPtx composite alloy films by systematically varying the Pt concentration and optimizing the composition. This method effectively enhances the transverse thermoelectric performance of the FCS-based alloys. Our findings offer valuable insights for the design and development of next-generation high-performance ANE materials.

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  • In Copyright

    This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Subrata Biswas, Rajkumar Modak, Takamasa Hirai, Ananthakrishnan Srinivasan, Perumal Alagarsamy, Ken-ichi Uchida; Transverse magneto-thermoelectric properties of Fe2CoSi alloy and Fe2CoSi–Pt composite films. J. Appl. Phys. 14 April 2026; 139 (14): 145102 and may be found at https://doi.org/10.1063/5.0314309.

Keyword: anomalous Nernst effect, transverse thermoelectrics, Heusler alloy

Date published: 2026-04-14

Publisher: AIP Publishing

Journal:

  • Journal of Applied Physics (ISSN: 00218979) vol. 139 issue. 14 145102

Funding:

  • Exploratory Research for Advanced Technology JPMJER2201
  • Japan Society for the Promotion of Science 22H04965
  • Japan Society for the Promotion of Science P21064
  • NEC Corporation

Manuscript type: Author's version (Accepted manuscript)

MDR DOI: https://doi.org/10.48505/nims.6255

First published URL: https://doi.org/10.1063/5.0314309

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Updated at: 2026-04-17 09:03:08 +0900

Published on MDR: 2026-04-17 10:27:25 +0900

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