Phase stability, crystal structure, and magnetic properties of NdCo7-xHfx compounds

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	Phase stability, crystal structure, and magnetic properties of NdCo7-xHfx compounds
	J. Luo; J. K. Liang; Y. Q. Guo; Q. L. Liu; F. S. Liu; L. T. Yang; Y. Zhang; G. H. Rao
	2004
发表期刊	Physica B-Condensed Matter
ISSN	0921-4526
卷号	353 期号:1-2 页码:98-103
摘要	The phase stability, crystal structure, and magnetic properties of NdCo7-xHfx (x = 0.1, 0.2, 0.3) compounds were studied by means of X-ray powder diffraction and magnetic measurements. A minor impurity phase coexists with the main 1:7 phase in the as-cast compound NdCo7-xHfx with x = 0.1 and 0.3. The compound with x = 0.2 crystallizes in the TbCu7-type structure with the space group P6/mmm. According to the structure refinement, the doping element Hf prefers to occupy the 2e site. The phase stability of NdCo6.8Hf0.2 compound under different heat treatment conditions is also discussed. Thermomagnetic analysis shows that the NdCo6.8Hf0.2 compound has a Curie temperature of 1065 K. The saturation magnetization of the NdCo6.8Hf0.2 compound is 113emu/g at 5K and 111 emu/g at 300K. The compound exhibits a conical magnetic anisotropy at room temperature with a magnetic anisotropy field about 30 kOe. In the NdCo6.8Hf0.2 compound, two spin reorientation transitions have been observed at 275 and 400 K, respectively. (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. acad sinica, int ctr mat phys, shenyang 110016, peoples r china. cent iron & steel res inst, inst funct mat, beijing 100081, peoples r china.;luo, j (reprint author), chinese acad sci, inst phys, pob 603, beijing 100080, peoples r china;jluo@aphy.iphy.ac.cn jkliang@aphy.iphy.ac.cn
关键词	Magnetically Ordered Materials X-ray Scattering Spin Reorientation Earth Cobalt Compounds Spin-reorientation Thermal-expansion Ndco5 Cu Alloys Gd Sm Anisotropy X=0-0.8
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WOS记录号	WOS:000225502300013
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/321006/35483
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	J. Luo,J. K. Liang,Y. Q. Guo,et al. Phase stability, crystal structure, and magnetic properties of NdCo7-xHfx compounds[J]. Physica B-Condensed Matter,2004,353(1-2):98-103.
APA	J. Luo.,J. K. Liang.,Y. Q. Guo.,Q. L. Liu.,F. S. Liu.,...&G. H. Rao.(2004).Phase stability, crystal structure, and magnetic properties of NdCo7-xHfx compounds.Physica B-Condensed Matter,353(1-2),98-103.
MLA	J. Luo,et al."Phase stability, crystal structure, and magnetic properties of NdCo7-xHfx compounds".Physica B-Condensed Matter 353.1-2(2004):98-103.