The electronic band structures,density of states and magnetic parameters for layer structural Zn_(0.5)Mn_(0.5)Se in ferromagnetic(F)phase have been calculated,using self-consistent linearized muffin-tin orbital method in atomic sphere approximation(LMTOASA).The p-d repulsion model is used to explain the band structure and distribution of density of states(DOS).The antiferromagnetic band structure is qualitatively analysed for this material in terms of p-d repulsion mechanism.
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