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
	2005
发表期刊	Journal of Alloys and Compounds
ISSN	0925-8388
卷号	390 期号:1-2 页码:21-25
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.
部门归属	chinese acad sci, inst phys, beijing 100080, peoples r china. chinese acad sci, ctr condensed matter phys, beijing 100080, peoples r china. nist, ctr neuron res, gaithersburg, md 20899 usa. acad sinica, int ctr mat phys, shenyang 110015, peoples r china.;rao, gh (reprint author), chinese acad sci, inst phys, pob 603, beijing 100080, peoples r china;ghrao@aphy.iphy.ac.cn
关键词	Magnetic Structure Neutron Powder Diffraction Laves Phase Rhombohedral Distortion Itinerant-electron Metamagnetism Intermetallic Compounds Magnetic-properties
URL	查看原文
WOS记录号	WOS:000227432300007
引用统计	被引频次：44[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/34990
专题	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.