Structure and magnetic phase transition in R(Co1-xGax)(2) (R = Nd, Gd, Tb, Dy) compounds

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	Structure and magnetic phase transition in R(Co1-xGax)(2) (R = Nd, Gd, Tb, Dy) compounds
	Z. W. Ouyang; G. H. Rao; H. F. Yang; W. F. Liu; G. Y. Liu; X. M. Feng; J. K. Liang
	2004
发表期刊	Physica B-Condensed Matter
ISSN	0921-4526
卷号	344 期号:1-4 页码:436-442
摘要	X-ray powder diffraction and magnetization measurements reveal that light rare earth and heavy rare earth have different effects on the structure, Curie temperature and magnetic phase transition of the compounds R(Co1-xGax)(2) (R = Nd, Gd, Tb, Dy) (x = 0.0-0.3). The lattice constant exhibits a giant increase with increasing Ga concentration in all compounds. The Curie temperature shows no variation for R = Nd, a monotonic decrease for R = Gd and a maximum for R=Tb and Dy, respectively. The Curie temperature is strongly related with volume expansion, in which a critical value of a(c) approximate to 7.26 Angstrom is reached. The observed magnetic transition in all compounds is well explained within the framework of the Inoue-Shimizu model. It is revealed that both the lattice constant and the Curie temperature have a strong relationship with the order of the magnetic phase transition. (C) 2003 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. acad sinica, int ctr mat phys, shenyang 110015, peoples r china.;ouyang, zw (reprint author), chinese acad sci, inst phys, pob 603, beijing 100080, peoples r china;zwouyang@aphy.iphy.ac.cn
关键词	Structure Curie Temperature Magnetic Phase Transition Itinerant-electron Metamagnetism Intermetallic Compounds Ac Susceptibility Order Temperature Behavior r(Co Yco2
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WOS记录号	WOS:000189038200059
引用统计	被引频次：9[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/321006/35508
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Z. W. Ouyang,G. H. Rao,H. F. Yang,et al. Structure and magnetic phase transition in R(Co1-xGax)(2) (R = Nd, Gd, Tb, Dy) compounds[J]. Physica B-Condensed Matter,2004,344(1-4):436-442.
APA	Z. W. Ouyang.,G. H. Rao.,H. F. Yang.,W. F. Liu.,G. Y. Liu.,...&J. K. Liang.(2004).Structure and magnetic phase transition in R(Co1-xGax)(2) (R = Nd, Gd, Tb, Dy) compounds.Physica B-Condensed Matter,344(1-4),436-442.
MLA	Z. W. Ouyang,et al."Structure and magnetic phase transition in R(Co1-xGax)(2) (R = Nd, Gd, Tb, Dy) compounds".Physica B-Condensed Matter 344.1-4(2004):436-442.