[18a-S2_201-1~10] 10.1 新物質・新機能創成（作製・評価技術）

10:45 〜 11:00奨励賞エントリー英語発表

[18a-S2_201-7] Anomalous Nernst effect in D0₃-ordered (Fe-Mn)₃Si composition-spread thin film

〇(M1)Ao Nakagawa^1,2, Satoki Tazawa^1,2, Nanhe Kumar Gupta², Nattamon Suwannaharn², Takamasa Hirai², Keisuke Masuda², Taisuke Sasaki², Ken-ichi Uchida^1,2,3, Yuya Sakuraba^1,2 (1.Univ. of Tsukuba, 2.NIMS, 3.Univ. of Tokyo)

キーワード：

Anomalous Nernst effect、Thin film

Anomalous Nernst effect is a crucial thermoelectric effect for an efficient thermal management. However, the practical application has been limited by the low thermopower. Thus, various materials have been investigated. D0₃-ordered Fe₃Si alloy exhibits large anomalous Nernst conductivity below the Fermi energy. Therefore, the Fermi level tuning by hole doping is required to realize the large anomalous Nernst conductivity in D0₃-Fe₃Si. In this study, we systematically investigated the effect of Mn substitution for Fe in Fe₃Si on the thermopower by fabricating (Fe_100-xMn_x)₃Si composition-spread thin films.