Magnetic properties of ErFeGa compounds with the 2 : 17-type structure

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	Magnetic properties of ErFeGa compounds with the 2 : 17-type structure
	B. G. Shen; Z. H. Cheng; H. Tang; B. Liang; S. Y. Zhang; F. W. Wang; W. S. Zhan; E. de Boer; K. H. J. Buschow
	1998
发表期刊	Solid State Communications
ISSN	0038-1098
卷号	107 期号:12 页码:781-786
摘要	An investigation of the structure and the magnetic anisotropy of Er2Fe17-xGax compounds has been performed by means of X-ray diffraction and magnetization measurements. X-ray diffraction shows the prepared compounds to be single phase, having the hexagonal Th2Ni17-type structure for x less than or equal to 3 and the rhombohedral Th2Zn17-type structure for x greater than or equal to 4. Substitution of Ga for Fe in Er2Fe17 leads to an increase of the unit-cell volume which is linear with the Ga content. The saturation magnetization at 1.5 K decreases linearly with increasing Ga concentration. The Curie temperature is found first to increase, then to decrease with increasing Ga concentration, having a maximum value of 526 K at about x = 3. The Er2Fe17-xGax compounds with x = 2, 3 and 4 exhibit a spin-reorientation transition with the spin-reorientation temperature being 136, 140 and 102 K, respectively. X-ray diffraction measurements on magnetically aligned Er2Fe17-xGax powders show that the compounds with x less than or equal to 7 have easy-plane type of magnetic anisotropy, whereas the compound with x = 8 exhibits easy-axis type of magnetic anisotropy at room temperature. The easy-magnetization direction of the sample of x = 8 is perpendicular to the c-axis at low temperature. Present result demonstrates that in Er2Fe17-xGax the substitution of high concentration of Ga leads to a change in the second-order crystal field parameter A(20) from negative to positive. (C) 1998 Elsevier Science Ltd. All rights reserved.
部门归属	chinese acad sci, inst phys, state key lab magnetism, beijing 100080, peoples r china. chinese acad sci, ctr condensed matter phys, beijing 100080, peoples r china. acad sinica, inst met res, shenyang 110015, peoples r china. univ amsterdam, van der waals zeeman inst, nl-1018 xe amsterdam, netherlands.;shen, bg (reprint author), chinese acad sci, inst phys, state key lab magnetism, pob 603, beijing 100080, peoples r china
关键词	Magnetocrystalline Anisotropy r(2)Fe(17-x)Ga(x) Compounds Substitution Mossbauer
URL	查看原文
WOS记录号	WOS:000075687200013
引用统计	被引频次：6[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/321006/37762
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	B. G. Shen,Z. H. Cheng,H. Tang,et al. Magnetic properties of ErFeGa compounds with the 2 : 17-type structure[J]. Solid State Communications,1998,107(12):781-786.
APA	B. G. Shen.,Z. H. Cheng.,H. Tang.,B. Liang.,S. Y. Zhang.,...&K. H. J. Buschow.(1998).Magnetic properties of ErFeGa compounds with the 2 : 17-type structure.Solid State Communications,107(12),781-786.
MLA	B. G. Shen,et al."Magnetic properties of ErFeGa compounds with the 2 : 17-type structure".Solid State Communications 107.12(1998):781-786.