Structure, magnetic, and transport properties of the perovskites Bi0.5Ca0.5Mn1-xCrxO3
文献类型：期刊论文
| 作者 | Xiong, CM ; Sun, JR ; Li, RW ; Zhang, SY ; Zhao, TY ; Shen, BG |
| 刊名 | JOURNAL OF APPLIED PHYSICS
 |
| 出版日期 | 2004 |
| 卷号 | 95期号:3页码:1336 |
| 关键词 | MANGANITES CR MAGNETORESISTANCE MANGANATES BIMNO3 |
| ISSN号 | 0021-8979 |
| 通讯作者 | Xiong, CM (reprint author), Chinese Acad Sci, Inst Phys, State Key Lab Magnetism, POB 603, Beijing 100080, Peoples R China. |
| 中文摘要 | Structure, magnetic, and transport properties of the compounds Bi0.5Ca0.5Mn1-xCrxO3 (BCMCO) with 0less than or equal toxless than or equal to0.15 have been experimentally investigated. The substitution of Cr3+ ion for Mn3+ ion suppresses the charge-ordering (CO) state obviously, leading to a gradual reduction of the CO transition temperature (T-CO). In contrast, the antiferromagnetic (AF) ordering temperature is essentially unaffected until x=0.024. A spin-glasslike behavior appears above x=0.024 due to the competition between the antiferromagnetic and ferromagnetic correlations. The latter emerges and develops with the incorporation of Cr. The AF phase disappears completely for xgreater than or equal to0.1, whereas the CO phase is still perceptible for x=0.15. A further analysis indicates that Cr doping produces a similar effect on T-CO for the Bi-based and lanthanide-based manganites: T-CO decreases at the same rate of similar to8 K for 1% Cr, despite the different initial values of T-CO. A striking observation of the present work is that for the manganites, there exists a characteristic temperature 180 K, and the CO state will be unstable when T-CO<180 K. As a result, a heavier Cr doping is required to completely destroy the CO phase with a higher T-CO. For BCMCO, the critical Cr content is estimated to be about 0.2. Electrical study shows that the conduction of BCMCO proceeds via variable-range hopping of charge carriers, and a huge magnetoresistance can be produced by Cr doping. (C) 2004 American Institute of Physics. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2013-09-24 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/53631]  |
| 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 | Xiong, CM,Sun, JR,Li, RW,et al. Structure, magnetic, and transport properties of the perovskites Bi0.5Ca0.5Mn1-xCrxO3[J]. JOURNAL OF APPLIED PHYSICS,2004,95(3):1336. |
| APA | Xiong, CM,Sun, JR,Li, RW,Zhang, SY,Zhao, TY,&Shen, BG.(2004).Structure, magnetic, and transport properties of the perovskites Bi0.5Ca0.5Mn1-xCrxO3.JOURNAL OF APPLIED PHYSICS,95(3),1336. |
| MLA | Xiong, CM,et al."Structure, magnetic, and transport properties of the perovskites Bi0.5Ca0.5Mn1-xCrxO3".JOURNAL OF APPLIED PHYSICS 95.3(2004):1336. |
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来源：物理研究所
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