Doping effects from Fe and Ge for Mn in La1-xCaxMnO3 (x=0.15-0.6)
文献类型：期刊论文
| 作者 | Sun, JR ; Li, RW ; Zhang, YZ ; Shen, BG |
| 刊名 | JOURNAL OF PHYSICS D-APPLIED PHYSICS
 |
| 出版日期 | 2001 |
| 卷号 | 34期号:9页码:1333 |
| 关键词 | MAGNETIC PHASE-DIAGRAM COLOSSAL MAGNETORESISTANCE MANGANESE PEROVSKITES MOSSBAUER LA0.67CA0.33MN0.9FE0.1O3 TRANSPORT CO |
| ISSN号 | 0022-3727 |
| 通讯作者 | Sun, JR: Chinese Acad Sci, State Key Lab Magnetism, Inst Phys, Beijing 100080, Peoples R China. |
| 中文摘要 | Effects from 4% Fe or Ge for Mn in La1-xCaxMnO3 (x = 0.15-0.6) are studied experimentally. All the compounds exhibit orthorhombic structure, unaffected by the introduction of Fe and Ge. The magnetic ordering temperature (T-c) and, accordingly, the metal-insulator transition decrease systematically due to the presence of secondary ions at the Mn lattice. The doping effects depend on dopant and Ca content, and the typical reduction in T-c, compared to the undoped counterparts, is similar to 60 K. Ge is more effective in suppressing the magnetic coupling for x less than or equal to 0.35, as indicated by the similar to 25 K lower Curie temperature in the Ge-doped compounds. When x exceeds 0.35, the Fe- and Ge-doping effects reverse. The other striking observation of the present study is the significant ferromagnetic enhancement below similar to 130 K, characterized by a sharp jump of the magnetization under a field of 5 T, and the re-entrance of the charge ordering state below similar to 50 K in the Ce-doped La0.5Ca0.5MnO3. The different doping effects of Fe and Ge presumably originate from their different roles of charge carrier mobility. The magnetic coupling between Fe and host Mn seems unimportant. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2013-09-17 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/36193]  |
| 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 | Sun, JR,Li, RW,Zhang, YZ,et al. Doping effects from Fe and Ge for Mn in La1-xCaxMnO3 (x=0.15-0.6)[J]. JOURNAL OF PHYSICS D-APPLIED PHYSICS,2001,34(9):1333. |
| APA | Sun, JR,Li, RW,Zhang, YZ,&Shen, BG.(2001).Doping effects from Fe and Ge for Mn in La1-xCaxMnO3 (x=0.15-0.6).JOURNAL OF PHYSICS D-APPLIED PHYSICS,34(9),1333. |
| MLA | Sun, JR,et al."Doping effects from Fe and Ge for Mn in La1-xCaxMnO3 (x=0.15-0.6)".JOURNAL OF PHYSICS D-APPLIED PHYSICS 34.9(2001):1333. |
入库方式： OAI收割
来源：物理研究所
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