[19p-D104-7~21] 10.1 新物質・新機能創成（作製・評価技術）

▼ [19p-D104-8] Large interfacial perpendicular magnetic anisotropy in epitaxial Fe₈₀Al₂₀/MgAl₂O₄ heterostructures

〇Thomas Scheike¹、Hiroaki Sukegawa¹、Xiandong Xu¹、Kazuhiro Hono^1,2、Seiji Mitani^1,2 (1.NIMS、2.Univ. of Tsukuba)

キーワード：PMA, Fe-Al, MgAl2O4

In this study, we investigated the interfacial perpendicular magnetic anisotropy (PMA) using a Fe-Al alloy. We found enhanced effective PMA energy K_eff up to 1.1 MJ/m³ at 450°C in Fe₈₀Al₂₀ in contact with an MgAl₂O₄ barrier. K_i reaches around 2.8 mJ/m³ at 450°C and is strongly temperature dependent. The large PMA can be attributed to the creation of effective Fe-O hybridization at the Fe-Al/MgAl₂O₄ interface through the atomic rearrangement.