Crystal structure and magnetic properties of Nd1-xYxCo6.8Zr0.2 compounds

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	Crystal structure and magnetic properties of Nd1-xYxCo6.8Zr0.2 compounds
	J. Luo; J. K. Liang; Q. L. Liu; F. S. Liu; Y. Zhang; L. T. Yang; Y. Q. Guo; G. H. Rao
	2005
发表期刊	Journal of Alloys and Compounds
ISSN	0925-8388
卷号	394 期号:1-2 页码:69-74
摘要	The Nd-1-xYxCo6.8Zr0.2 compounds with x = 0-1.0 have been investigated by means of X-ray powder diffraction and magnetic measurements. The as-cast Nd1-xYxCo6.8Zr0.2 compounds crystallize in the hexagonal TbCU7-type structure with the space group P61mmm. The lattice parameters a, c and the cell volume V decrease linearly with the Y content. The saturation moment per formula unit decreases almost linearly with the Y content. However, the saturation moment of per Co atom increases with the Y content, reaches a maximum value at about x = 0.5, then decreases with increasing content of Y The Curie temperature and the magnetic anisotropy field of the compounds increase with the Y content. The increase of the Curie temperature is mainly related to the increase of the Co-Co exchange interaction due to the volume reduction effect. The Nd1-xYxCo6.8Zr0.2 Compounds with x = 0-0.8 show basal plane anisotropy at 5 K, but show basal plane (x = 0) or c-axis (x = 0.2-0.8) anisotropy at room temperature. The Nd1-xYxCo6.8Zr0.2 compound with x = 1.0 shows c-axis magnetic anisotropy at both 5 K and room temperature. A spin reorientation transition has been found in the Nd1-xYxCo6.8Zr0.2 compounds and the SR temperature decreases with the Y content. (c) 2004 Elsevier B. V. All rights reserved.
部门归属	chinese acad sci, inst phys, beijing natl lab 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.;liang, jk (reprint author), chinese acad sci, inst phys, beijing natl lab condensed matter phys, pob 603, beijing 100080, peoples r china;jkliang@aphy.iphy.ac.cn
关键词	Magnetically Ordered Materials X-ray Scattering Spin Reorientation Spin-reorientation Rare-earth Exchange Interactions Thermal-expansion Single-crystal Ndco5 Temperature Cu Alloys Gd
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文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/34969
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,Q. L. Liu,et al. Crystal structure and magnetic properties of Nd1-xYxCo6.8Zr0.2 compounds[J]. Journal of Alloys and Compounds,2005,394(1-2):69-74.
APA	J. Luo.,J. K. Liang.,Q. L. Liu.,F. S. Liu.,Y. Zhang.,...&G. H. Rao.(2005).Crystal structure and magnetic properties of Nd1-xYxCo6.8Zr0.2 compounds.Journal of Alloys and Compounds,394(1-2),69-74.
MLA	J. Luo,et al."Crystal structure and magnetic properties of Nd1-xYxCo6.8Zr0.2 compounds".Journal of Alloys and Compounds 394.1-2(2005):69-74.