Structure and magnetic properties of ScFe6Ga6-type RCo5Ga7 (R = Y, Tb, Dy, Ho and Er)
文献类型：期刊论文
| 作者 | H. Chang ; Y. Q. Guo ; L. T. Yang ; Q. L. Liua ; W. C. Feng ; J. K. Liang ; G. H. Rao |
| 刊名 | Journal of Solid State Chemistry
 |
| 出版日期 | 2004 |
| 卷号 | 177期号:11页码:4341-4345 |
| 关键词 | crystal structure ScFe6Ga6-type structure magnetic ordering ferromagnetic transition neutron-diffraction crystal-structure lu gd sm magnetoresistance earth metal fe |
| ISSN号 | 0022-4596 |
| 中文摘要 | The structure and magnetic properties of the RCo5Ga7 (R = Y, Tb, Dy, Ho and Er) compounds with the ScFe6Ga6-type structure have been studied. The stability of RCo5Ga7 is closely related with the ratio of the metal radii R-RE/R-(Co,R-Ga). With R-RE/R-(Co,R-Ga) less than or equal to 1.36, the compounds can be stabilized in the ScFe6Ga6-type structure. The lattice of RCo5Ga7 shrinks as the atomic order of R increases, and it is consistent with the lanthanide contraction. The structure analysis based on X-ray diffraction patterns reveals that in the orthorhombic RCo5Ga7 (Immm), R occupies the 2a site, and Co enters into the 8k and the 4h sites, and Ga is at the 4e, 4f, 4g, 4h and 8k sites. The interatomic distances and the coordination numbers of RCo5Ga7 are provided from the refinement results. The short interatomic distance (less than 2.480 Angstrom) between the Co ions results in the negative magnetic interaction, which does not favor ferromagnetic ordering. The magnetic moment of YCo5Ga7 is absent, and RCo5Ga7 (R = Tb, Dy, Ho and Er) may have long-range magnetic ordering with the paramagnetic Curie temperature lower than 5 K. (C) 2004 Elsevier Inc. All rights reserved. |
| 原文出处 | |
| 公开日期 | 2012-04-14 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/35317]  |
| 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 | H. Chang,Y. Q. Guo,L. T. Yang,et al. Structure and magnetic properties of ScFe6Ga6-type RCo5Ga7 (R = Y, Tb, Dy, Ho and Er)[J]. Journal of Solid State Chemistry,2004,177(11):4341-4345. |
| APA | H. Chang.,Y. Q. Guo.,L. T. Yang.,Q. L. Liua.,W. C. Feng.,...&G. H. Rao.(2004).Structure and magnetic properties of ScFe6Ga6-type RCo5Ga7 (R = Y, Tb, Dy, Ho and Er).Journal of Solid State Chemistry,177(11),4341-4345. |
| MLA | H. Chang,et al."Structure and magnetic properties of ScFe6Ga6-type RCo5Ga7 (R = Y, Tb, Dy, Ho and Er)".Journal of Solid State Chemistry 177.11(2004):4341-4345. |
入库方式： OAI收割
来源：金属研究所
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