| 双掺杂稀土锰氧化物La2/3(Ca1/3Sr2/3)1/3MnO3薄膜的输运特性 |
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| 引用本文： | 金克新,陈长乐,王永仓,赵省贵,任韧,袁孝,宋宙模. 双掺杂稀土锰氧化物La2/3(Ca1/3Sr2/3)1/3MnO3薄膜的输运特性[J]. 功能材料, 2005, 36(1): 37-39 |
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| 作者姓名： | 金克新 陈长乐 王永仓 赵省贵 任韧 袁孝 宋宙模 |
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| 作者单位： | 西北工业大学,理学院应用物理系,陕西,西安,710072;西北工业大学,理学院应用物理系,陕西,西安,710072;西安交通大学,理学院,陕西,西安,710049;华中科技大学,激光技术国家重点实验室,湖北,武汉,430074 |
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| 基金项目： | 国家自然基金资助项目(60171043);陕西省自然基金资助项目(2001C21);西北工业大学博士生创新基金资助项目(2003323) |
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| 摘 要： | 采用射频磁控溅射法制备了Ca、Sr双掺杂La2/3(Ca1/3Sr2/3)1/3MnO3(LCSMO)薄膜。电阻率-温度特性表明，薄膜在387K时发生铁磁金属相-顺磁非导体相相变。同时测试了薄膜在180，230和280K温度下的伏安特性．表明所制备的薄膜具有自阻效应，并分析了产生该现象的原因。
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| 关 键 词： | 钙钛矿结构 负阻效应 双交换作用 小极化子 Jahn-Teller效应 |
| 文章编号： | 1001-9731(2005)01-0037-03 |
| 修稿时间： | 2004-03-11 |
Transport characteristic of the double-doped perovskite manganite La2/3 (Ca1/3Sr2/3)1/3MnO3 thin film |
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| JIN Ke-xin,CHEN Chang-le,WANG Yong-cang,ZHAO Sheng-gui,REN Ren,RUAN Xiao,SONG Zhou-mo. Transport characteristic of the double-doped perovskite manganite La2/3 (Ca1/3Sr2/3)1/3MnO3 thin film[J]. Journal of Functional Materials, 2005, 36(1): 37-39 |
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| Authors: | JIN Ke-xin CHEN Chang-le WANG Yong-cang ZHAO Sheng-gui REN Ren RUAN Xiao SONG Zhou-mo |
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| Affiliation: | JIN Ke-xin~1,CHEN Chang-le~1,WANG Yong-cang~1,ZHAO Sheng-gui~1,REN Ren~2,RUAN Xiao~3,SONG Zhou-mo~1 |
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| Abstract: | Double-doped perovskite thin film of La_(2/3)(Ca_(1/3)Sr_(2/3))_(1/3)MnO_3 (LCSMO)has been prepared with RF magnetron sputtering method. We have observed a metal-to-insulator (M-I) transition in this film at 387K as increasing its temperature. The voltage-current characteristics of the film at 180K, 230K and 280K indicate that the thin film has the negative resistance effect. These phenomena were qualitatively explained by the double exchange model and the Jahn-Teller effect. |
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| Keywords: | perovskite thin film double-exchange negative resistance effect electron spin |
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