DEPENDENCE OF THE MAGNETIC-MOMENT ON THE LOCAL ATOMIC ORDER IN RH(2)MNX HEUSLER ALLOYS

被引:24
作者
PUGACHEVA, M
JEZIERSKI, A
机构
[1] Institute of Molecular Physics, Polish Academy of Sciences, 60-179 Poznań
关键词
D O I
10.1016/0304-8853(95)00372-X
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The electronic structure and magnetic moment of three Rh-based Heusler alloys Rh(2)MnX, with X = Ge, Sn and Pb have been calculated using the tight binding linear muffin-tin orbital (TB LMTO) method. The total magnetic moment increases with increasing atomic number of X. In the densities of states (DOS) for the ordered structure we observe a gap between the s band of the X atom, and the p and d bands of Rh and Mn. The DOS for the disordered alloys was computed using the TB LMTO-CPA method. For the disordered Rh-0.5(MnX)(0.25) alloy the value of the total magnetic moment was found to be smaller than for the ordered structure.
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页码:202 / 206
页数:5
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