Temperature dependent neutron powder diffraction study of the Laves phase compound TbCo2

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	Temperature dependent neutron powder diffraction study of the Laves phase compound TbCo2
	Z. W. Ouyang ; F. W. Wang ; Q. Hang ; W. F. Liu ; G. Y. Liu ; J. W. Lynn ; J. K. Liang ; G. H. Rao
刊名	Journal of Alloys and Compounds
	2005
卷号	390 期号:1-2 页码:21-25
关键词	magnetic structure neutron powder diffraction Laves phase rhombohedral distortion itinerant-electron metamagnetism intermetallic compounds magnetic-properties
ISSN号	0925-8388
中文摘要	The structure, magnetization and magnetostriction of Laves phase compound TbCo2 are investigated by temperature dependent high resolution neutron powder diffraction. The compound crystallizes in the cubic Laves phase C15 structure above its Curie temperature T-c and exhibits a rhombohedral distortion (space group R (3) over barm) below T-c. By an appropriate extrapolation of the temperature factor of Co atom above Tc, the Rietveld refinement of the neutron powder diffraction data of the rhombohedral structure converges satisfactorily and reveals that the moments of Co1(3b) and Co2(9e) are almost equal. Tb moment follows well the Brillouin function. The total magnetic moment of TbCo2 is about 5-8mu(B)/f.u., the anisotropic magnetostriction constant lambda(111) is about 4.6 x 10(-3) and the volume magnetostriction omega(s) is about 8.7 x 10(-3) at 14 K. (C) 2004 Elsevier B.V. All rights reserved.
原文出处	://WOS:000227432300007
公开日期	2012-04-14
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/34990]
专题	金属研究所_中国科学院金属研究所
推荐引用方式 GB/T 7714	Z. W. Ouyang,F. W. Wang,Q. Hang,et al. Temperature dependent neutron powder diffraction study of the Laves phase compound TbCo2[J]. Journal of Alloys and Compounds,2005,390(1-2):21-25.
APA	Z. W. Ouyang.,F. W. Wang.,Q. Hang.,W. F. Liu.,G. Y. Liu.,...&G. H. Rao.(2005).Temperature dependent neutron powder diffraction study of the Laves phase compound TbCo2.Journal of Alloys and Compounds,390(1-2),21-25.
MLA	Z. W. Ouyang,et al."Temperature dependent neutron powder diffraction study of the Laves phase compound TbCo2".Journal of Alloys and Compounds 390.1-2(2005):21-25.