Large room-temperature magnetoresistance in epitaxial La0.7Ca0.25Sr0.05MnO3 thin films prepared by sol-gel method
文献类型：期刊论文
| 作者 | Zhang, Yuanyuan1; Dong, Wenxia1; Qi, Ruijuan1; Huang, Rong1; Yang, Jing1; Bai, Wei1; Zhong, Ni1; Chen, Ying2; Wang, Genshui2; Dong, Xianlin2 |
| 刊名 | JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
 |
| 出版日期 | 2016-06-01 |
| 卷号 | 78期号:3页码:576-581 |
| 关键词 | Sol-gel La0.7Ca0.25Sr0.05MnO3 Epitaxial growth Magnetic properties Magnetoresistance |
| 英文摘要 | Epitaxial La0.7Ca0.25Sr0.05MnO3 (LCSMO) thin films were successfully prepared on LaAlO3 (LAO) substrates by ordinary aqueous sol-gel method. X-ray diffraction result shows that the films have perfect crystalline orientation. The HRTEM results confirm that the films have epitaxial structure and the interface is very sharp and no misfit dislocations. The selected area electron diffraction patterns and fast Fourier transformation patterns mean that there exist three domains in the thin film. The single-particle spin-flip excitations are dominant for the metallic ferromagnets in low-temperature range. In paramagnetic range, the temperature dependence of resistivity can be well analyzed using a small polaron theory. The magnetoresistance value for the films reaches maximum about 65 % with 7 T magnetic field at 285 K which is promising for highly demanding applications. The conventional sol-gel method produces the lanthanum manganese oxide thin films with excellent epitaxial structure and large magnetoresistance at room temperature which can be used for either fundamental studies or real applications. |
| WOS标题词 | Science & Technology ; Technology |
| 类目[WOS] | Materials Science, Ceramics |
| 研究领域[WOS] | Materials Science |
| 关键词[WOS] | POLYMER-ASSISTED DEPOSITION ; COLOSSAL MAGNETORESISTANCE ; TRANSPORT ; LA0.67CA0.33MNO3 ; INTERFACE ; BEHAVIOR ; PHYSICS ; OXIDES |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000374104500012 |
| 源URL | [http://ir.sic.ac.cn/handle/331005/23043]  |
| 专题 | 上海硅酸盐研究所_无机功能材料与器件重点实验室_期刊论文 |
| 作者单位 | 1.E China Normal Univ, Minist Educ, Dept Elect Engn, Key Lab Polar Mat & Devices, Shanghai 200241, Peoples R China 2.Chinese Acad Sci, Shanghai Inst Ceram, Key Lab Inorgan Funct Mat & Devices, Shanghai 200050, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Yuanyuan,Dong, Wenxia,Qi, Ruijuan,et al. Large room-temperature magnetoresistance in epitaxial La0.7Ca0.25Sr0.05MnO3 thin films prepared by sol-gel method[J]. JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY,2016,78(3):576-581. |
| APA | Zhang, Yuanyuan.,Dong, Wenxia.,Qi, Ruijuan.,Huang, Rong.,Yang, Jing.,...&Tang, Xiaodong.(2016).Large room-temperature magnetoresistance in epitaxial La0.7Ca0.25Sr0.05MnO3 thin films prepared by sol-gel method.JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY,78(3),576-581. |
| MLA | Zhang, Yuanyuan,et al."Large room-temperature magnetoresistance in epitaxial La0.7Ca0.25Sr0.05MnO3 thin films prepared by sol-gel method".JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY 78.3(2016):576-581. |
入库方式： OAI收割
来源：上海硅酸盐研究所
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