Syntheses and magnetic properties of Rm+nCo5m+3nB2n compounds

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	Syntheses and magnetic properties of Rm+nCo5m+3nB2n compounds
	Y. Chen; J. K. Liang; X. L. Chen; Q. L. Liu; B. G. Shen; Y. P. Shen
	1999
发表期刊	Journal of Physics-Condensed Matter
ISSN	0953-8984
卷号	11 期号:42 页码:8251-8261
摘要	New compounds Pr3Co13B2 and Nd5Co19B6 have been synthesized successfully. They belong to the Rm+nCo5m+3nB2n family with m = 2, n = 1 and m = 2 and n = 3, respectively. Pr3Co13B2 adopts the hexagonal La3Ni13B2-type structure with lattice parameters a = 5.0672(3) Angstrom and c = 10.6850(6) Angstrom, while Nd5Co19B6 is isostructural to Lu5Ni19B6 With a = 5.1328(3) Angstrom and c = 16.6519(5) Angstrom. Magnetic measurements indicate that Pr3Co13B2 is ferromagnetic with a Curie temperature of 360 K. Its saturation magnetic moment at 5 K is 20.0 mu(B) fu(-1). Based on the results of the saturation magnetization, two kinds of Co sites with different magnetic moments are proposed. Pr3Co13B2 exhibits large uniaxial anisotropy with an anisotropy field of 90 A m(-1) at 5 K. The Nd5Co19B6 compound is ferromagnetic with a Curie temperature of 380 K. Its saturation magnetic moment and anisotropy field are 21.5 mu(B) fu(-1) and 340 A m(-1) at 5 K, respectively. No spin reorientation was detected from the temperature dependence of the magnetization of these compounds from 5 K to their Curie temperatures, and the behaviour of magnetocrystalline anisotropy was analysed using the single-ion model.
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. chinese acad sci, int ctr mat phys, shenyang 110015, peoples r china. chinese acad sci, inst phys, state key lab magnet, beijing 100080, peoples r china.;chen, y (reprint author), chinese acad sci, inst phys, pob 603, beijing 100080, peoples r china
关键词	Anisotropy System Field
URL	查看原文
WOS记录号	WOS:000083436000008
引用统计	被引频次：21[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/321006/37332
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Y. Chen,J. K. Liang,X. L. Chen,et al. Syntheses and magnetic properties of Rm+nCo5m+3nB2n compounds[J]. Journal of Physics-Condensed Matter,1999,11(42):8251-8261.
APA	Y. Chen,J. K. Liang,X. L. Chen,Q. L. Liu,B. G. Shen,&Y. P. Shen.(1999).Syntheses and magnetic properties of Rm+nCo5m+3nB2n compounds.Journal of Physics-Condensed Matter,11(42),8251-8261.
MLA	Y. Chen,et al."Syntheses and magnetic properties of Rm+nCo5m+3nB2n compounds".Journal of Physics-Condensed Matter 11.42(1999):8251-8261.