Electronic Structures, and Magnetic and Half-Metallic Properties of Equiatomic Quaternary ScRhTiZ (Z = Si, Ge, Sn) Heusler Alloys

被引：0
作者：
Yong Li
Xinyue Ye
Xiaofei Zhang
机构：
[1] Hangzhou Dianzi University,Key Laboratory of Novel Materials for Sensor of Zhejiang Province, College of Materials and Environmental Engineering
来源：
Journal of Electronic Materials | 2023年 / 52卷
关键词：
Electronic structure; magnetic property; half-metallic property; equiatomic quaternary Heusler alloys;
D O I：
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中图分类号：
学科分类号：
摘要：
Electronic structures, and the magnetic and half-metallic (HM) properties of equiatomic quaternary ScRhTiZ (Z = Si, Ge, Sn) Heusler (EQH) alloys have been analyzed by first-principles calculations. The results show that equilibrium lattice constants of ScRhTiZ (Z = Si, Ge, Sn) are 6.29 Å, 6.36 Å, and 6.61 Å, respectively. For uniform strain, HM properties are observed with magnetic moments of 2 μB in the range of lattice constants of 5.51–6.28 Å, 5.48–6.29 Å, and 5.44–6.26 Å for ScRhTiZ (Z = Si, Ge, Sn), respectively. For tetragonal distortion, the transitions of FM (metal ferromagnetic)-HM-FM-HM-FM states can be obtained for ScRhTiSi by changing the c/a. ScRhTiGe exhibits an FM state and ScRhTiSn undergoes the transitions of FM-FIM (ferrimagnetic)-FM states in its metal nature. Magnetic moments mainly come from Sc and Ti atoms. All three compounds obey the Slater–Pauling rule, Mt = Zt − 18 in HM nature. The phonon spectra indicate that ScRhTiGe and ScRhTiSn are dynamically stable at equilibrium lattice constants due to no imaginary frequencies. This work can facilitate the exploration of new HM materials in the future application of spintronic devices.
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页码：6062 / 6070
页数：8
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