| Ag复合对La2/3(Ca0.45Sr0.55)1/3MnO3/xAg体系电输运和室温磁电阻效应影响 |
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| 引用本文： | 赵辉,董义,赵洪亮,濮春英,荀显超,赵国斌,刘红梅.Ag复合对La2/3(Ca0.45Sr0.55)1/3MnO3/xAg体系电输运和室温磁电阻效应影响[J].低温与超导,2011,39(7):74-78. |
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| 作者姓名： | 赵辉 董义 赵洪亮 濮春英 荀显超 赵国斌 刘红梅 |
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| 作者单位： | 1. 空军航空大学基础部物理室,长春,130021
2. 天津天和磁材技术有限公司,天津,300384 |
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| 摘 要： | 文中采用甘氨酸-硝酸盐法分别制备了La2/3(Ca0.45Sr0.55)1/3MnO3/xAg纳米复合材料(x=0；0.1；0.2；0.3).通过X射线衍射、扫描电子显微镜和磁电阻效应测试,对合成产物的结构及性能进行表征.结果表明,随Ag复合量增加,样品均为正交钙钛矿结构,低场室温磁电阻效应增强,电阻率减小.
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| 关 键 词： | 钙钛矿锰基氧化物 复合材料 电输运 低场室温磁电阻效应 |
Study on the magnetoresistance properties of La2/3 ( Ca0.45Sr0.55 ) 1/3MnO3/xAg at room temperature |
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| Zhao Hui,Dong Yi,Zhao Hongliang,Pu Chunying,Xun Xianchao,Zhao Guobin,Liu Hongmei.Study on the magnetoresistance properties of La2/3 ( Ca0.45Sr0.55 ) 1/3MnO3/xAg at room temperature[J].Cryogenics and Superconductivity,2011,39(7):74-78. |
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| Authors: | Zhao Hui Dong Yi Zhao Hongliang Pu Chunying Xun Xianchao Zhao Guobin Liu Hongmei |
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| Institution: | 1(1.Foundation Department,Aviation University,Changchun 130022,China;2.Tianhe Magnets,Tianjin 300384,China) |
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| Abstract: | La2/3(Ca0.45Sr0.55)1/3MnO3/xAg(x=0;0.1;0.2;0.3) fine powders were synthesied by a Glyince-Nitrate Process(GNP) method.The influence of Ag contents on the MR and electrical transport properties(resistivity) of a series of composite samples of La2/3(Ca0.45Sr0.55)1/3MnO3/xAg(x=0.1;0.2;0.3) were studied.Results show that the composite causes the low-field room temperature magnetoresistance(7%) and decrease the resistivity. |
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| Keywords: | Manganites perovskite Composite materials Electronic transport Low field room temperature magnetoresistance |
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