The realization of ferro-ferrimagnetic transition and half-metallicity in half-Heusler CoMnGa alloy

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	The realization of ferro-ferrimagnetic transition and half-metallicity in half-Heusler CoMnGa alloy
	Wang, LY ; Dai, XF ; Wang, XT ; Liu, XF ; Li, PP ; Cui, YT ; Liu, EK ; Wang, WH ; Wu, GH ; Liu, GD
刊名	APPLIED PHYSICS LETTERS
	2014
卷号	105 期号:21
ISSN号	0003-6951
通讯作者	Liu, GD (reprint author), Hebei Univ Technol, Sch Mat Sci & Engn, Tianjin 300130, Peoples R China.
中文摘要	We theoretically predicted that half-Heusler CoMnGa alloy to be half-metallic ferrimagnet at the equilibrium lattice parameter. With the lattice expansion, a local energy minimum occurs at a larger lattice parameter where CoMnGa alloy is in a metastable ferromagnetic state. However, a ferro-ferrimagnetic transition (Fo-Fi-T) is not observed in experiment. We found the Co-Mn antisites can induce the Fo-Fi-T by adjusting the driving force of magnetic transition and the energy barrier. The antisites are sensitive to the preparation methods and annealing temperatures. The highly ordered CoMnGa is achieved by annealing at 1073 K. The Fo-Fi-T occurs in a sample annealed at 1083 K. (C) 2014 AIP Publishing LLC.
资助信息	National Natural Science Foundation of China [51271071]; Key Basic Research Program of Applied Basic Research Program of Hebei Province [12965136D]; Hebei Province Natural Science Foundation [E2013202181]; Hebei Province Higher Education Science and Technology Research Foundation for Youth Scholars [Q2012008]
语种	英语
公开日期	2015-04-14
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/58875]
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	Wang, LY,Dai, XF,Wang, XT,et al. The realization of ferro-ferrimagnetic transition and half-metallicity in half-Heusler CoMnGa alloy[J]. APPLIED PHYSICS LETTERS,2014,105(21).
APA	Wang, LY.,Dai, XF.,Wang, XT.,Liu, XF.,Li, PP.,...&Liu, GD.(2014).The realization of ferro-ferrimagnetic transition and half-metallicity in half-Heusler CoMnGa alloy.APPLIED PHYSICS LETTERS,105(21).
MLA	Wang, LY,et al."The realization of ferro-ferrimagnetic transition and half-metallicity in half-Heusler CoMnGa alloy".APPLIED PHYSICS LETTERS 105.21(2014).