Crystal structure, magnetic and electrical-transport properties of rare-earth-doped Sr2FeMoO6
文献类型：期刊论文
| 作者 | Q. Zhang ; G. H. Rao ; Y. G. Xiao ; H. Z. Dong ; G. Y. Liu ; Y. Zhang ; J. K. Liang |
| 刊名 | Physica B-Condensed Matter
 |
| 出版日期 | 2006 |
| 卷号 | 381期号:1-2页码:233-238 |
| 关键词 | double perovskite electron doping saturation magnetization degree of ordering double-perovskite sr2femoo6 low-field magnetoresistance electronic-properties temperature transition disorder oxide |
| ISSN号 | 0921-4526 |
| 中文摘要 | Crystal structure, magnetic and electrical-transport properties of the rare-earth-doped compounds (Sr(1.85)Ln(0.15))FeMoO6 (Ln = Sr, La, Ce, Pr, Nd, Sin and Eu) have been investigated by means of X-ray diffraction, magnetic and electric measurements. All the samples are single phase and belong to the I4/m space group. Due to the competing contributions of electron doping and steric effects, the unit-cell volume of the doped compounds changes slightly and does not vary systematically with the ionic radius of the rare-earth ions. The temperature dependence of the magnetization of (Sr(1.85)Ln(0.15))FeMoO6 indicates that the Curie temperature of the doped compounds has increased upon doping, except for the Eu-doped compound. The saturation magnetization of the compounds at 5 K cannot be explained simply by considering the ferrimagnetic arrangement of the magnetic sublattices of Fe and Mo because of the magnetic contribution of rare-earth ions. However, the saturation magnetization at 100 K of the doped compounds exhibits a linear decrease with the increase of the anti-site defect concentration. Comparison of the saturation magnetization of the compounds at 5 and 100 K suggests that at 5 K the magnetic moments of Ce, Pr, Nd and Sin align parallel with that of Fe, while the magnetic moment of Eu is anti-parallel with that of Fe. The normalized resistivities of the parent and the La- and Sm-doped compounds exhibit a semiconductor-metal transition, while the Pr-, Nd- and Eu-doped compounds exhibit semiconducting behavior. (c) 2006 Elsevier B.V. All rights reserved. |
| 原文出处 | |
| 公开日期 | 2012-04-14 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/34702]  |
| 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 | Q. Zhang,G. H. Rao,Y. G. Xiao,et al. Crystal structure, magnetic and electrical-transport properties of rare-earth-doped Sr2FeMoO6[J]. Physica B-Condensed Matter,2006,381(1-2):233-238. |
| APA | Q. Zhang.,G. H. Rao.,Y. G. Xiao.,H. Z. Dong.,G. Y. Liu.,...&J. K. Liang.(2006).Crystal structure, magnetic and electrical-transport properties of rare-earth-doped Sr2FeMoO6.Physica B-Condensed Matter,381(1-2),233-238. |
| MLA | Q. Zhang,et al."Crystal structure, magnetic and electrical-transport properties of rare-earth-doped Sr2FeMoO6".Physica B-Condensed Matter 381.1-2(2006):233-238. |
入库方式： OAI收割
来源：金属研究所
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