Correlation of structural distortion with magnetic properties in electron-doped Ca(0.9)R(0.1)MnO(3) perovskites (R=rare-earth)
文献类型：期刊论文
| 作者 | Y. Wang ; Y. Sui ; X. J. Wang ; W. H. Su ; X. Y. Liu |
| 刊名 | Journal of Applied Physics
 |
| 出版日期 | 2010 |
| 卷号 | 108期号:6 |
| 关键词 | phase-separation double exchange magnetoresistance manganites camno3 la transition manganates bandwidth physics |
| ISSN号 | 0021-8979 |
| 中文摘要 | A series of electron-doped orthorhombic-perovskite manganites Ca(0.9)R(0.1)MnO(3) (R=La, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, and Yb) are synthesized for a systematic study of their crystal structure and magnetic properties. The structural distortions, in terms of the average Mn-O-Mn bond angle theta(Mn-O-Mn) and Mn-O bond length d(Mn-O), are characterized as a function of the A-site ionic size. Two degenerate vibration modes Q(2) and Q(3) are used for describing the bond length splitting and the evolution of the octahedral-site distortion. With R(3+) doping, the magnetization increases markedly at low temperatures, which can be attributed to the formation of ferromagnetic clusters in the antiferromagnetic matrix. Both low temperature magnetization and paramagnetic susceptibility vary with the radius of R(3+) ion and enhanced ferromagnetic domain is found in Ca(0.9)Ho(0.1)MnO(3). The Neel temperature T(N), varying from 100 to 116 K, is strongly dependent on the crystal structural distortions and can be well described as functions of three structural parameters theta(Mn-O-Mn), d(Mn-O), and A-site cation size variance sigma(2). The best size matching between Dy(3+) and Ca(2+) leads to the highest T(N) in Ca(0.9)Dy(0.1)MnO(3). (C) 2010 American Institute of Physics. [doi:10.1063/1.3481419] |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://210.72.142.130/handle/321006/31541]  |
| 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 | Y. Wang,Y. Sui,X. J. Wang,et al. Correlation of structural distortion with magnetic properties in electron-doped Ca(0.9)R(0.1)MnO(3) perovskites (R=rare-earth)[J]. Journal of Applied Physics,2010,108(6). |
| APA | Y. Wang,Y. Sui,X. J. Wang,W. H. Su,&X. Y. Liu.(2010).Correlation of structural distortion with magnetic properties in electron-doped Ca(0.9)R(0.1)MnO(3) perovskites (R=rare-earth).Journal of Applied Physics,108(6). |
| MLA | Y. Wang,et al."Correlation of structural distortion with magnetic properties in electron-doped Ca(0.9)R(0.1)MnO(3) perovskites (R=rare-earth)".Journal of Applied Physics 108.6(2010). |
入库方式： OAI收割
来源：金属研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。