Abstract
We develop an electron theory for the t2g electrons of Co 2+ ions to clarify the perpendicular magnetic anisotropy (PMA) mechanism of Co-ferrite thin films by considering the spin-orbit interaction (SOI) and crystal-field (CF) potentials induced by the local symmetry around the Co ions and the global tetragonal symmetry of the film. Uniaxial and in-plane MA constants Ku and K1 at 0 K, respectively, are calculated for various values of SOI and CF. We show that reasonable parameter values explain the observed PMA and that the orbital moment for the in-plane magnetization reduces to nearly half of that of the out-of-plane magnetization.
Original language | English |
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Article number | 027111 |
Journal | AIP Advances |
Volume | 4 |
Issue number | 2 |
DOIs | |
Publication status | Published - 2014 Feb 1 |
ASJC Scopus subject areas
- Physics and Astronomy(all)