An Application of the Coherent Potential Approximation to Ferromagnetic Ternary Alloys

Jo Takeo, Hasegawa Hideo, Kanamori Junjiro

doi:10.1143/jpsj.35.57

An Application of the Coherent Potential Approximation to Ferromagnetic Ternary Alloys

DOI Web Site BIBCODE 被引用文献2件参考文献6件

Jo Takeo

Department of Physics, Faculty of Science, Osaka University
Hasegawa Hideo

Department of Physics, Faculty of Science, Osaka University
Kanamori Junjiro

Department of Physics, Faculty of Science, Osaka University

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説明

The electronic structure of the fcc ferromagnetic ternary alloy systems, Fe_xCo_yNi_z, Fe_xNi_yMn_z and Ni_xCo_yMn_z(x+y+z=1) are investigated by the use of the coherent potential approximation. In a wide region of the phase diagram the calculated saturation magnetization of Fe_xCo_yNi_z is well expressed as a function of the average number of electrons of a given alloy, which is in agreement with experimental data. The magnetic moment of each constituent atom shows an interesting concentration dependence; Co magnetic moment for example decreases to a considerable extent by an addition of a few percent of Fe to Ni–Co. The calculated results of Fe_xNi_yMn_z and Ni_xCo_yMn_z well reproduce the general tendency of the measured saturation magnetization.