Valence transition and low field magnetoresistance in (Sr2-xBax)FeMoO6
文献类型：期刊论文
| 作者 | Feng, XM ; Rao, GH ; Liu, GY ; Liu, WF ; Ouyang, ZW ; Liang, JK |
| 刊名 | JOURNAL OF PHYSICS-CONDENSED MATTER
 |
| 出版日期 | 2004 |
| 卷号 | 16期号:10页码:1813 |
| 关键词 | ROOM-TEMPERATURE MAGNETORESISTANCE DOUBLE-PEROVSKITE SR2FEMOO6 MAGNETIZATION BA2FEMOO6 OXIDE |
| ISSN号 | 0953-8984 |
| 通讯作者 | Rao, GH (reprint author), Chinese Acad Sci, Inst Phys, POB 603, Beijing 100080, Peoples R China. |
| 中文摘要 | The crystal structure, electronic transport and magnetic properties of double perovskite (Sr2-xBax)FeMoO6 (0 less than or equal to X less than or equal to, 2) are investigated. These compounds exhibit a metal-insulator transition as a function of doping x. The valence transition from Fe3(+)-Mo5(+) to Fe2+ -MO6+ when x exceeds the critical concentration x = 1.6 can lead to a localization of the itinerant electrons and plays a key role in the metal-insulator transition. The bond distance data and composition dependence of the Curie temperature and magnetoresistance suggest this valence transition. The Curie temperature T-C shows an enhancement on the Ba-poor side and decreases monotonically with x on the Ba-rich side, which can be understood in terms of two competing effects: anti-site defects and chemical pressure. The low field magnetoresistance shows a close correlation with the Curie temperature of the compounds. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2013-09-23 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/46489]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | Feng, XM,Rao, GH,Liu, GY,et al. Valence transition and low field magnetoresistance in (Sr2-xBax)FeMoO6[J]. JOURNAL OF PHYSICS-CONDENSED MATTER,2004,16(10):1813. |
| APA | Feng, XM,Rao, GH,Liu, GY,Liu, WF,Ouyang, ZW,&Liang, JK.(2004).Valence transition and low field magnetoresistance in (Sr2-xBax)FeMoO6.JOURNAL OF PHYSICS-CONDENSED MATTER,16(10),1813. |
| MLA | Feng, XM,et al."Valence transition and low field magnetoresistance in (Sr2-xBax)FeMoO6".JOURNAL OF PHYSICS-CONDENSED MATTER 16.10(2004):1813. |
入库方式： OAI收割
来源：物理研究所
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