Pressure effects on magnetic properties and martensitic transformation of Ni-Mn-Sn magnetic shape memory alloys

被引：3
|
作者：
Zhang Ya-Zhuo [1 ]
Cao Jia-Mu [2 ]
Tan Chang-Long [2 ]
Cao Yi-Jiang [2 ]
Cai Wei [3 ]
机构：
[1] Harbin Inst Technol, Dept Math, Harbin 150001, Peoples R China
[2] Harbin Univ Sci & Technol, Coll Appl Sci, Harbin 150080, Peoples R China
[3] Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150001, Peoples R China
来源：
CHINESE PHYSICS B | 2014年 / 23卷 / 03期
基金：
中国国家自然科学基金;
关键词：
ferromagnetic shape memory alloys; magnetic properties; martensitic transformation; electronic band structure; HEUSLER ALLOYS; NI50MN36SN14;
D O I：
10.1088/1674-1056/23/3/037504
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The mechanism for the effects of pressure on the magnetic properties and the martensitic transformation of Ni-Mn-Sn shape memory alloys is revealed by first-principles calculations. It is found that the total energy difference between paramagnetic and ferromagnetic austenite states plays an important role in the magnetic transition of Ni-Mn-Sn under pressure. The pressure increases the relative stability of the martensite with respect to the austenite, leading to an increase of the martensitic transformation temperature. Moreover, the effects of pressure on the magnetic properties and the martensitic transformation are discussed based on the electronic structure.
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页数：5
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