Structure and unusual magnetic properties in the itinerant electron system Hf0.8Ta0.2(Fe1-xCOx)(2)

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	Structure and unusual magnetic properties in the itinerant electron system Hf0.8Ta0.2(Fe1-xCOx)(2)
	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	Journal of Alloys and Compounds
ISSN	0925-8388
卷号	370 期号:1-2 页码:18-24
摘要	The crystal structure and magnetization of Hf0.8Ta0.2(Fe1-xCOx)(2) are investigated by X-ray powder diffraction and magnetization measurements. The compounds exhibit the Laves C14 structure for x = 0.0-0.2 and the C15 structure for x greater than or equal to 0.3. The structural transition from C14 to C15 leads to an anomaly of the unit cell volume between x = 0.2 and 0.3. When x = 0.0, the compound undergoes a magnetic phase transition from ferromagnetic to paramagnetic state via the antiferromagnetic state, in which a field-induced metamagnetic transition is observed. When x = 0.1 and 0.2, the compounds exhibit unusually small saturation moments, which are considered as antiferromagnetism (with weak ferromagnetic impurities) and weak ferromagnetism or ferrimagnetism, respectively. The formation of the AFM state is associated with a small bond length of Fe atom in the 6h site. When x greater than or equal to 0.3, the compounds exhibit a ferromagnetic to paramagnetic transition, which can be explained by itinerant electron metamagnetism. (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	Itinerant Electron System Laves Phase Hf0.8ta0.2fe2 Transport-properties Ferromagnetic Transition Laves Phases Hf1-xtaxfe2 Alloys Hf
URL	查看原文
WOS记录号	WOS:000221158200010
引用统计	被引频次：11[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/321006/35507
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 unusual magnetic properties in the itinerant electron system Hf0.8Ta0.2(Fe1-xCOx)(2)[J]. Journal of Alloys and Compounds,2004,370(1-2):18-24.
APA	Z. W. Ouyang.,G. H. Rao.,H. F. Yang.,W. F. Liu.,G. Y. Liu.,...&J. K. Liang.(2004).Structure and unusual magnetic properties in the itinerant electron system Hf0.8Ta0.2(Fe1-xCOx)(2).Journal of Alloys and Compounds,370(1-2),18-24.
MLA	Z. W. Ouyang,et al."Structure and unusual magnetic properties in the itinerant electron system Hf0.8Ta0.2(Fe1-xCOx)(2)".Journal of Alloys and Compounds 370.1-2(2004):18-24.