Neutron diffraction study of MnNiGa2-Structural and magnetic behaviour

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	Neutron diffraction study of MnNiGa2-Structural and magnetic behaviour
	Wang, JL ; Ma, L ; Hofmann, M ; Avdeev, M ; Kennedy, SJ ; Campbell, SJ ; Din, MFM ; Hoelzel, M ; Wu, GH ; Dou, SX
刊名	JOURNAL OF APPLIED PHYSICS
	2014
卷号	115 期号:17
ISSN号	0021-8979
通讯作者	Wang, JL (reprint author), Univ Wollongong, Inst Superconduct & Elect Mat, Wollongong, NSW 2522, Australia.
中文摘要	MnNiGa2 crystallizes in the L21 (Heusler) structure and has a ferromagnetic ordering temperature T-C similar to 192 K. Rietveld refinement of the neutron diffraction patterns indicates that the Ga atoms occupy the equivalent 8c position, while Mn and Ni share the 4a (0, 0, 0) and 4b (0.5, 0.5, 0.5) sites with a mixed occupancy of Mn and Ni atoms. It is found that that similar to 83% of Mn and similar to 17% Ni are located at the 4a site while similar to 83% of Ni and similar to 17% Mn occupy the 4b site. There is no evidence of a magneto-volume effect around T-C. In agreement with this finding, our detailed critical exponent analyses of isothermal magnetization curves and the related Arrott plots confirm that the magnetic phase transition at T-C is second order. (C) 2014 AIP Publishing LLC.
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/311004/59153]
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, JL,Ma, L,Hofmann, M,et al. Neutron diffraction study of MnNiGa2-Structural and magnetic behaviour[J]. JOURNAL OF APPLIED PHYSICS,2014,115(17).
APA	Wang, JL.,Ma, L.,Hofmann, M.,Avdeev, M.,Kennedy, SJ.,...&Dou, SX.(2014).Neutron diffraction study of MnNiGa2-Structural and magnetic behaviour.JOURNAL OF APPLIED PHYSICS,115(17).
MLA	Wang, JL,et al."Neutron diffraction study of MnNiGa2-Structural and magnetic behaviour".JOURNAL OF APPLIED PHYSICS 115.17(2014).