Exchange interaction, spin cluster and transport behaviour in perovskites La0.67Sr0.33(Mn1-xNi)(x)O-3 (x <= 0.2)
文献类型：期刊论文
| 作者 | Wang, ZH ; Cai, JW ; Shen, BG ; Chen, X ; Zhan, WS |
| 刊名 | JOURNAL OF PHYSICS-CONDENSED MATTER
 |
| 出版日期 | 2000 |
| 卷号 | 12期号:5页码:601 |
| 关键词 | MIXED-VALENCE MANGANITES GIANT MAGNETORESISTANCE COLOSSAL MAGNETORESISTANCE GRAIN-BOUNDARIES THIN-FILMS OXIDES SYSTEM FIELD CA |
| ISSN号 | 0953-8984 |
| 通讯作者 | Wang, ZH: Max Planck Inst Met Forsch, Heisenbergstr 1, D-70569 Stuttgart, Germany. |
| 中文摘要 | A systematic investigation of the magnetic and transport properties of perovskites La0.67Sr0.33(Mn1-xNix)O-3(x less than or equal to 0.2) is reported. The replacement of the Mn ion by a Ni ion results in a reduction of ferromagnetism and metallic conduction. For the sample with x = 0.1, in addition to a metal-insulator (M-I) transition at 240 K, there is a weak insulating behaviour at low temperatures. As the magnetization drop below the Curie temperature (T-C) in the thermomagnetic curve appears for the dosage of x = 0.15, the insulating behaviour at low temperatures becomes pronounced. For the sample with x = 0.2, a cluster glass-like state with no M-I transition near T-C 194 K is shown. The ferromagnetic superexchange interaction between the Mn3+(4+) ion and the Ni2+ ion is found to account for the formation of the cluster glass-like state rather than a spin glass stare. All samples have a colossal magnetoresistance (CMR). In particular, with the suppression of the ferromagnetism, the MR effect shifts towards low temperatures and becomes considerably enhanced. Besides the depletion of hopping electrons and the destroyed metallic paths due to the foreign Ni ion terminating the double exchange interaction in the Mn-O network, the randomly frozen spin cluster at low temperatures has been revealed as another crucial factor for localizing charge carriers. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2013-09-17 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/37728]  |
| 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 | Wang, ZH,Cai, JW,Shen, BG,et al. Exchange interaction, spin cluster and transport behaviour in perovskites La0.67Sr0.33(Mn1-xNi)(x)O-3 (x <= 0.2)[J]. JOURNAL OF PHYSICS-CONDENSED MATTER,2000,12(5):601. |
| APA | Wang, ZH,Cai, JW,Shen, BG,Chen, X,&Zhan, WS.(2000).Exchange interaction, spin cluster and transport behaviour in perovskites La0.67Sr0.33(Mn1-xNi)(x)O-3 (x <= 0.2).JOURNAL OF PHYSICS-CONDENSED MATTER,12(5),601. |
| MLA | Wang, ZH,et al."Exchange interaction, spin cluster and transport behaviour in perovskites La0.67Sr0.33(Mn1-xNi)(x)O-3 (x <= 0.2)".JOURNAL OF PHYSICS-CONDENSED MATTER 12.5(2000):601. |
入库方式： OAI收割
来源：物理研究所
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