Large anomalous Nernst effect in the ferromagnetic Fe3Si polycrystal

Yangming Wang; Susumu Minami; Akito Sakai; Taishi Chen; Zili Feng; Daisuke Nishio-Hamane; Satoru Nakatsuji

doi:10.1007/978-981-96-0191-2_2

Large anomalous Nernst effect in the ferromagnetic Fe3Si polycrystal

Materials Science 2025-03-11 v1

Authors: Yangming Wang , Susumu Minami , Akito Sakai , Taishi Chen , Zili Feng , Daisuke Nishio-Hamane , Satoru Nakatsuji

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Abstract

The high-throughput calculation predicts that the Fe-based cubic ferromagnet Fe $_3$ Si may exhibit a large anomalous Nernst effect (ANE). Here, we report our experimental observation of the large Nernst coefficient $S_{yx}\sim$ 2 $\mu$ V/K and the transverse thermoelectric coefficient $-\alpha_{yx}$ $\sim$ 3 Am $^{-1}$ K $^{-1}$ for Fe $_3$ Si polycrystal at room temperature. The large $-\alpha_{yx}$ indicates that the large ANE originates from the intrinsic Berry curvature mechanism. The high Curie temperature of 840 K and the most abundant raw elements of Fe and Si make Fe $_3$ Si a competitive candidate for Nernst thermoelectric generations.

Keywords

nernst effect

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@article{arxiv.2405.01800,
  title  = {Large anomalous Nernst effect in the ferromagnetic Fe3Si polycrystal},
  author = {Yangming Wang and Susumu Minami and Akito Sakai and Taishi Chen and Zili Feng and Daisuke Nishio-Hamane and Satoru Nakatsuji},
  journal= {arXiv preprint arXiv:2405.01800},
  year   = {2025}
}

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Accepted to Proceedings of the 15th Asia Pacific Physics Conference (APPC 15), Springer Nature

Large anomalous Nernst effect in the ferromagnetic Fe3Si polycrystal

Abstract

Keywords

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