[13p-S302-1~15] 10.1 新物質・新機能創成（作製・評価技術）

▼ [13p-S302-2] Large Modulation of the Fermi Energy in an Iron-Based Alloy

〇Naoto Yamashita¹、Ei Shigematsu¹、Syuta Honda²、Ryo Ohshima¹、Masashi Shiraishi¹、Yuichiro Ando¹ (1.Kyoto Univ.、2.Kansai Univ.)

キーワード：ferromagnetic material, work function

There are three transition elements having Curie temperatures (T_c) higher than a room temperature (RT) due to the Stoner criterion: cobalt, nickel, and iron (Fe). An obstacle to the application is their little variation of the Fermi energy, E_F: they locate at within only 0.7 eV (ranging from −4.5 to −5.2 eV below the vacuum level), which hampers progress in spintronic devices involving the manipulation of Schottky barriers or Rashba fields. Spintronics researchers desire new ferromagnetic/ferrimagnetic materials (FMs) satisfying T_c > RT and widely variable E_F. Here we present an Fe-based alloy, FeGd.