Study on Electronic Structure and Magnetic Property of MnGa Binary Alloy under Isostatic Pressure

Abstract

Abstract: In order to study the electronic structure and magnetic properties of the non-rare earth based MnGa binary alloys under isostatic pressure, the crystal structure, formation, spin electronic structure as well as magnetic property of the tetragonal MnGa alloy under isostatic pressure of 500 MPa were systematically studied based on density functional theory calculation method. The results show that the tetragonal MnGa alloy can be formed easier, however the compressibility is anisotropic under the isostatic pressure of 500 MPa. The distances between heterogeneous species are smaller than that between the homogeneous species. The band structures are anisotropic and metallic. The Mn d states form higher net magnetic moment than that of the Ga d states in the MnGa alloy, and the Mn d states contribute to systematic remanent magnetism. The tetragonal MnGa alloy presents weak ferrimagnetism, its net magnetic moment decreases under 500 MPa.

Key words: tetragonal MnGa alloy, isostatic pressure, crystal structure, spin electronic structure, magnetic property, density functional theory

CLC Number:

O59
TB34

ZHANG Feipeng, LU Qingmei, LIU Weiqiang, ZHANG Dongtao, YUE Ming. Study on Electronic Structure and Magnetic Property of MnGa Binary Alloy under Isostatic Pressure[J]. JOURNAL OF SYNTHETIC CRYSTALS, 2024, 53(3): 541-550.

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