Entropy contribution to the stability of double perovskite Sr2FexMo2-xO6
文献类型：期刊论文
| 作者 | G. H. Rao ; G. Y. Liu ; X. M. Feng ; Q. Zhang ; J. K. Liang |
| 刊名 | Science and Technology of Advanced Materials
 |
| 出版日期 | 2005 |
| 卷号 | 6期号:7页码:750-754 |
| 关键词 | double perovskite cationic ordering stability configuration entropy magnetic moment sr2femoo6 double perovskite magnetic-properties electrical properties magnetoresistance fe transport site substitution transition disorder |
| ISSN号 | 1468-6996 |
| 中文摘要 | In contrast to the substitution of exotic elements such as Mn, Cu for Fe or W for Mo in Sr2FeMoO6, the degree of ordering of Fe and Mo in Sr2FexMo2-xO6 shows a maximum at x(C) = 0.95 and decreases as x deviates from x(C). Saturation magnetization depends upon composition in a similar way. It is shown that the entropy due to antisite defects or substitutional disorder can stabilize the double perovskite structure. It is proposed that the stability of the double perovskite structure of Sr2FexMo2-xO(6) is essentially determined by the combined contribution to free energy of configuration entropy and differences in ionic charge and in ionic radius. A plausible charge distribution of Fe and Mo cations in Sr2FexMo2-xO6 is proposed to elucidate the observed composition-dependence of magnetization. (c) 2005 Elsevier Ltd. All rights reserved. |
| 原文出处 | |
| 公开日期 | 2012-04-14 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/35015]  |
| 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 | G. H. Rao,G. Y. Liu,X. M. Feng,et al. Entropy contribution to the stability of double perovskite Sr2FexMo2-xO6[J]. Science and Technology of Advanced Materials,2005,6(7):750-754. |
| APA | G. H. Rao,G. Y. Liu,X. M. Feng,Q. Zhang,&J. K. Liang.(2005).Entropy contribution to the stability of double perovskite Sr2FexMo2-xO6.Science and Technology of Advanced Materials,6(7),750-754. |
| MLA | G. H. Rao,et al."Entropy contribution to the stability of double perovskite Sr2FexMo2-xO6".Science and Technology of Advanced Materials 6.7(2005):750-754. |
入库方式： OAI收割
来源：金属研究所
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