Structure dependence of magnetic properties of Nd5Si4-xGex (x=1.2 and 2)

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	Structure dependence of magnetic properties of Nd5Si4-xGex (x=1.2 and 2)
	H. F. Yang; G. H. Rao; G. Y. Liu; Z. W. Ouyang; W. F. Liu; X. M. Feng; W. G. Chu; J. K. Liang
	2003
发表期刊	Physica B-Condensed Matter
ISSN	0921-4526
卷号	325 期号:1-4 页码:293-299
摘要	The crystal structure and magnetic properties of ternary compounds Nd5Si4-xGex (x = 1.2 and 2) were investigated by means of X-ray powder diffraction and magnetic measurements. The as-cast samples alpha-Nd5Si2.8Ge1.2 and beta-Nd5Si2Ge2 crystallize in the orthorhombic Gd5Si4-type structure with space group Puma and the monoclinic Gd5Si2Ge2-type structure with space group P112(1)/a, respectively. The samples beta-Nd5Si2.8Ge1.2 and beta-Nd5Si2Ge2 annealed at 1273 K all crystallize in the tetragonal Zr5Si4-type structure with space group P4(1)2(1)2. All phases of alpha-Nd5Si2.8Ge1.2, beta-Nd5Si2.8Ge1.2, alpha-Nd5Si2Ge2 and beta-Nd5Si2Ge2 exhibit a spin glasslike behavior and may have a canted magnetic structure. The Curie temperature shows a strong dependence on the crystal structure of the compounds. The average interatomic distances of magnetic Nd atoms and the amount of the covalent (Si,Ge)-(Si,Ge) bond pairs in these phases are different, which may be responsible for their different magnetic properties. (C) 2002 Elsevier Science 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. 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
关键词	Rare Earth Compounds Magnetic Properties Crystal Structure Transition Gd-5(Si2ge2) Gd-5(Sixge1-x)(4) Gd-5(Si1.8ge2.2)
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WOS记录号	WOS:000180354600040
引用统计	被引频次：10[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/321006/36110
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	H. F. Yang,G. H. Rao,G. Y. Liu,et al. Structure dependence of magnetic properties of Nd5Si4-xGex (x=1.2 and 2)[J]. Physica B-Condensed Matter,2003,325(1-4):293-299.
APA	H. F. Yang.,G. H. Rao.,G. Y. Liu.,Z. W. Ouyang.,W. F. Liu.,...&J. K. Liang.(2003).Structure dependence of magnetic properties of Nd5Si4-xGex (x=1.2 and 2).Physica B-Condensed Matter,325(1-4),293-299.
MLA	H. F. Yang,et al."Structure dependence of magnetic properties of Nd5Si4-xGex (x=1.2 and 2)".Physica B-Condensed Matter 325.1-4(2003):293-299.