期刊
IEEE TRANSACTIONS ON MAGNETICS
卷 38, 期 5, 页码 2794-2795出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TMAG.2002.803103
关键词
(Fe-Co-Ni-Cr)(50)Pt-50 ordered alloys; magnetic anisotropy; order parameter; valence electron number
The intrinsic perpendicular magnetic anisotropy constant K. for (Fe-Co-Ni)(50)Pt-50 quaternary alloy and (Fe-Cr)(50)Pt-50 alloy thin films is discussed as a function of structure and composition. Both M-s, and the estimated K-u values obtained by the extrapolation to order parameter S = I using the dependence of K-u on S become maximum at the valence electron number eta(elect) = 8, being independent of alloy system. The magnetic anisotropy is determined to the first approximation by the Fermi energy, which changes with the number of electrons, but not by the band structure itself.
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