Magnetic properties of Fe1-xNix alloy from CPA plus DMFT perspectives

被引:9
|
作者
Poteryaev, Alexander I. [1 ]
Skorikov, Nikolay A. [1 ]
Anisimov, Vladimir I. [1 ]
Korotin, Michael A. [1 ]
机构
[1] Russian Acad Sci, MN Miheev Inst Met Phys, Ural Branch, 18 S Kovalevskaya St, Ekaterinburg 620990, Russia
基金
俄罗斯科学基金会;
关键词
MEAN-FIELD THEORY; STRONGLY CORRELATED MATERIALS; QUANTUM IMPURITY MODELS; IRON-NICKEL ALLOYS; SYSTEMS; APPROXIMATION; DIMENSIONS; ORIGIN; METAL; NI;
D O I
10.1103/PhysRevB.93.205135
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
We use a combination of the coherent potential approximation and dynamical mean field theory to study magnetic properties of the Fe1-x Ni-x alloy from first principles. Calculated uniform magnetic susceptibilities have a Curie-Weiss-likebehavior, and extracted effective temperatures are in agreement with the experimental results. The individual squared magnetic moments obtained as a function of nickel concentration follow the same trends as experimental data. An analysis of the ionic and spin weights shows a possibility of high-spin to intermediate-and low-spin state transitions at high temperatures.
引用
收藏
页数:7
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