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

▲ [13p-S302-12] Origin of Perpendicular Magnetic Anisotropy in Co_xFe_3-xO₄ Film
Studied by Magnetic Circular and Linear Dichroisms

〇Jun Okabayashi¹、Masaaki Tanaka²、Masaya Morishita²、Hideto Yanagihara³、Ko Mibu² (1.UTokyo、2.Nagoya Inst. Tech.、3.Univ. Tsukuba)

キーワード：perpendicular magnetic anisotropy

Co-ferrite has been utilized as a magnet. Recent development of perpendicular magnetic anisotropy (PMA) in CoFe₂O₄ opens up the application for spintronics devices. However, the origin of the PMA has not been clarified yet. In this presentation, we aim to discuss the element-specific orbital magnetic moments in CoFe₂O₄ using x-ray magnetic circular and linear dichroisms. We found the enhancement of orbital magnetic moments in Co in the case of PMA compared with the case of in-plane anisotropy, which corresponds to the PMA from the spectral and theoretical analyses.