期刊
APPLIED PHYSICS LETTERS
卷 94, 期 16, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3116618
关键词
band structure; density functional theory; electronic density of states; ferrimagnetic materials; ground states; indium alloys; magnetic moments; magnetic transitions; magnetisation; manganese alloys; martensitic transformations; nickel alloys; shape memory effects; solid-state phase transformations; spin polarised transport; total energy
资金
- Max Planck Institute, Germany
- Department of Science and Technology, Government of India
Using density functional theory, we show that in Mn2NiIn a phase transition from cubic to tetragonal structure results in a lowering of the total energy, indicating occurrence of martensitic phase transition. The structural phase transition is nearly volume conserving, which is a characteristic of a shape memory alloy. The magnetic ground state is ferrimagnetic with antiparallel Mn spin moments and the total spin magnetization is 0.51 mu(B) in the martensitic phase. Thus, we predict that Mn2NiIn would behave like a magnetic shape memory alloy. The electronic structure and magnetic properties are explained by the spin polarized density of states.
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