中国物理B ›› 2014, Vol. 23 ›› Issue (3): 37504-037504.doi: 10.1088/1674-1056/23/3/037504

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇    下一篇

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

张雅卓a, 曹伽牧b, 谭昌龙b, 曹一江b, 蔡伟c   

  1. a Department of Mathematics, Harbin Institute of Technology, Harbin 150001, China;
    b College of Applied Science, Harbin University of Science and Technology, Harbin 150080, China;
    c School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
  • 收稿日期:2013-07-16 修回日期:2013-08-09 出版日期:2014-03-15 发布日期:2014-03-15
  • 基金资助:
    Project supported by the New Century Excellent Talents in Heilongjiang Provincial University, China (Grant No. 1253-NCET-009), the Youth Academic Backbone in Heilongjiang Provincial University, China (Grant No. 1251G022), and the National Natural Science Foundation of China (Grant Nos. 50901026 and 51301054).

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

Zhang Ya-Zhuo (张雅卓)a, Cao Jia-Mu (曹伽牧)b, Tan Chang-Long (谭昌龙)b, Cao Yi-Jiang (曹一江)b, Cai Wei (蔡伟)c   

  1. a Department of Mathematics, Harbin Institute of Technology, Harbin 150001, China;
    b College of Applied Science, Harbin University of Science and Technology, Harbin 150080, China;
    c School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
  • Received:2013-07-16 Revised:2013-08-09 Online:2014-03-15 Published:2014-03-15
  • Contact: Zhang Ya-Zhuo E-mail:zhangyazhuo@hit.edu.cn
  • Supported by:
    Project supported by the New Century Excellent Talents in Heilongjiang Provincial University, China (Grant No. 1253-NCET-009), the Youth Academic Backbone in Heilongjiang Provincial University, China (Grant No. 1251G022), and the National Natural Science Foundation of China (Grant Nos. 50901026 and 51301054).

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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.

关键词: ferromagnetic shape memory alloys, magnetic properties, martensitic transformation, electronic band structure

Abstract: 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.

Key words: ferromagnetic shape memory alloys, magnetic properties, martensitic transformation, electronic band structure

中图分类号:  (Other ferromagnetic metals and alloys)

  • 75.50.Cc
75.30.-m (Intrinsic properties of magnetically ordered materials) 81.30.-t (Phase diagrams and microstructures developed by solidification and solid-solid phase transformations)