The 82nd JSAP Autumn Meeting 2021

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Oral presentation

10 Spintronics and Magnetics » 10.1 Emerging materials in spintronics and magnetics (including fabrication and characterization methodologies)

[13p-S302-1~15] 10.1 Emerging materials in spintronics and magnetics (including fabrication and characterization methodologies)

Mon. Sep 13, 2021 1:30 PM - 5:45 PM S302 (Oral)

Takeshi Seki(Tohoku Univ.), Taro Nagahama(Hokkaido Univ.), Shinya Kasai(NIMS)

4:45 PM - 5:00 PM

▲ [13p-S302-12] Origin of Perpendicular Magnetic Anisotropy in CoxFe3-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)

Keywords: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.