Magnetic properties of ErFeGa compounds with the 2 : 17-type structure
文献类型：期刊论文
| 作者 | 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 |
| 刊名 | Solid State Communications
 |
| 出版日期 | 1998 |
| 卷号 | 107期号:12页码:781-786 |
| 关键词 | magnetocrystalline anisotropy r(2)fe(17-x)ga(x) compounds substitution mossbauer |
| ISSN号 | 0038-1098 |
| 中文摘要 | 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. |
| 原文出处 | |
| 公开日期 | 2012-04-14 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/37762]  |
| 专题 | 金属研究所_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. |
入库方式： OAI收割
来源：金属研究所
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