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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.

権利情報:

• 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.

キーワード: anomalous Nernst effect, transverse thermoelectrics, Heusler alloy

刊行年月日: 2026-04-14

出版者: AIP Publishing

掲載誌:

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

研究助成金:

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

原稿種別: 著者最終稿 (Accepted manuscript)

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

公開URL: https://doi.org/10.1063/5.0314309

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更新時刻: 2026-04-17 09:03:08 +0900

MDRでの公開時刻: 2026-04-17 10:27:25 +0900