| The effect of doping Ag on the microstructure of La2/3Sr1/3MnO3 films |
| Q. Zhan; R. Yu; L. L. He; D. X. Li; J. Li; C. K. Ong
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| 2002
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| 发表期刊 | Journal of Materials Research
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| ISSN | 0884-2914
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| 卷号 | 17期号:10页码:2712-2719 |
| 摘要 | The microstructure of Ag-doped La2/3Sr1/3MnO3 (LSMO) thin films deposited on (001) LaAlO3 single-crystal substrates was systematically investigated in cross section and plan view by high-resolution electron microscopy and analytical electron microscopy. The results showed that the films deposited at 750 degreesC were perfectly epitaxial with or without Ag-doping. No Ag in the doped film was detected. On the other hand, the LSMO films deposited at 400 degreesC were less perfect. With increasing Ag-doping level, the shape of LSMO grains became irregular, and the grain size increased gradually. Large polycrystalline clusters consisting of LSMO, AgO, and Ag grains formed in the doped films, and the amount and size of them increased with increasing Ag-doping level. Ag existed at the LSMO grain boundaries in its elemental state. A growth process for the LSMO-Ag system is discussed based on the experimental results. The enhancement of the magnetic spin disorders at the grain boundaries and interfaces caused by doping Ag could result in an improvement of low-field magnetoresistance. |
| 部门归属 | chinese acad sci, met res inst, shenyang natl lab mat sci, shenyang 110016, peoples r china. natl univ singapore, dept phys, singapore 119260, singapore. natl univ singapore, ctr superconducting & magnet mat, singapore 119260, singapore.;zhan, q (reprint author), chinese acad sci, met res inst, shenyang natl lab mat sci, 72 wenhua rd, shenyang 110016, peoples r china
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| 关键词 | Yba2cu3o7-delta Thin-films
Low-field Magnetoresistance
Perovskite
Manganite Films
Giant Magnetoresistance
Grain-boundaries
In-situ
Silver
Growth
Polycrystalline
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| URL | 查看原文
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| WOS记录号 | WOS:000178351400033
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| 引用统计 |
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| 文献类型 | 期刊论文
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| 条目标识符 | http://ir.imr.ac.cn/handle/321006/36524
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| 专题 | 中国科学院金属研究所
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推荐引用方式
GB/T 7714 |
Q. Zhan,R. Yu,L. L. He,et al. The effect of doping Ag on the microstructure of La2/3Sr1/3MnO3 films[J]. Journal of Materials Research,2002,17(10):2712-2719.
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| APA |
Q. Zhan,R. Yu,L. L. He,D. X. Li,J. Li,&C. K. Ong.(2002).The effect of doping Ag on the microstructure of La2/3Sr1/3MnO3 films.Journal of Materials Research,17(10),2712-2719.
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| MLA |
Q. Zhan,et al."The effect of doping Ag on the microstructure of La2/3Sr1/3MnO3 films".Journal of Materials Research 17.10(2002):2712-2719.
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