Role of covalent hybridization in the martensitic structure and magnetic properties of shape-memory alloys: The case of Ni50Mn5+xGa35-xCu10

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	Role of covalent hybridization in the martensitic structure and magnetic properties of shape-memory alloys: The case of Ni50Mn5+xGa35-xCu10
	Li, GJ ; Liu, EK ; Zhang, HG ; Zhang, YJ ; Xu, GZ ; Luo, HZ ; Zhang, HW ; Wang, WH ; Wu, GH
刊名	APPLIED PHYSICS LETTERS
	2013
卷号	102 期号:6
ISSN号	0003-6951
通讯作者	Wang, WH (reprint author), Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China.
中文摘要	The influence of covalent hybridization on the martensitic structure and magnetic properties of Ni50Mn5-xGa35-xCu10 shape-memory alloys has been investigated. It is found that the lattice distortion (c - a)/a of L1(0) martensite linearly increases upon substitution of Mn for Ga, showing a change of slope at Ga = 25 at.%, which is ascribed to a weakened covalent hybridization between main-group and transition-metal atoms. Moreover, due to the competition between the covalent hybridization and the magnetic ordering of the substituted Mn atoms, the magnetic moment per formula unit and the Curie temperature show maxima at Ga = 25 at.% as well. This behavior is closely associated with the corresponding changes of the strength of the covalent hybridization. The results, therefore, suggest that a careful control of the concentration of main-group atoms in Heusler alloys may serve as a tuning parameter for finding multifunctional materials. (C) 2013 American Institute of Physics. [http://dx.doi.org/10.1063/1.4791701]
资助信息	National Basic Research Program of China (973 Program) [2012CB619405]; National Natural Science Foundation of China [51071172, 51171207, 51021061]
语种	英语
公开日期	2014-01-17
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/57413]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Li, GJ,Liu, EK,Zhang, HG,et al. Role of covalent hybridization in the martensitic structure and magnetic properties of shape-memory alloys: The case of Ni50Mn5+xGa35-xCu10[J]. APPLIED PHYSICS LETTERS,2013,102(6).
APA	Li, GJ.,Liu, EK.,Zhang, HG.,Zhang, YJ.,Xu, GZ.,...&Wu, GH.(2013).Role of covalent hybridization in the martensitic structure and magnetic properties of shape-memory alloys: The case of Ni50Mn5+xGa35-xCu10.APPLIED PHYSICS LETTERS,102(6).
MLA	Li, GJ,et al."Role of covalent hybridization in the martensitic structure and magnetic properties of shape-memory alloys: The case of Ni50Mn5+xGa35-xCu10".APPLIED PHYSICS LETTERS 102.6(2013).