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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.
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页数:7
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