| 应力对La_(0.8)Ca_(0.2)MnO_3薄膜电输运性能的调控研究 |
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| 引用本文： | 胡小飞,;姚洋,;华正和.应力对La_(0.8)Ca_(0.2)MnO_3薄膜电输运性能的调控研究[J].淮阴师范学院学报(自然科学版),2014(2):117-120. |
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| 作者姓名： | 胡小飞 ;姚洋 ;华正和 |
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| 作者单位： | [1]宁夏大学物理与电气信息学院,宁夏银川750021; [2]淮阴师范学院物理与电子电气工程学院,江苏淮安223300 |
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| 基金项目： | 江苏省高校大学生实践创新训练计划项目（2012JSSPITP2486） |
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| 摘 要： | 采用脉冲激光沉积技术,在LaAlO3和0.67Pb(Mg1/3Nb2/3)O3-0.33PbTiO3两种单晶基片上外延生长了La0.8Ca0.2MnO3薄膜.X射线衍射分析表明两种薄膜皆为单取向生长,且面内分别受到压应力和张应力作用.晶格失配造成的应力对薄膜的电阻和金属-绝缘相转变温度Tp影响很大.对LCMO/PMN-PT施加外电场,从而调节薄膜所受应力也可以调制其电阻和Tp.
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| 关 键 词： | La0.8Ca0.2MnO3薄膜 应力 电运输性质 |
The Effect of Strain on Electrical Transport Properties in La0.8 Ca0.2 MnO3 Films |
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| Institution: | HU Xiao-fei, YAO Yang, HUA Zheng-he ( 1. School of Physics and Electrical Information, Ningxia University, Yinchuan Ningxia 750021, China;2. School of Physics and Electronic Electrical Engineering, Huaiyin Normal University, Huaian Jiangsu 223300, China) |
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| Abstract: | La0.8 Ca0.2 MnO3 thin films were epitaxially grown on LaAlO3 and 0.67Pb （Mg1/3 Nb2/3） O3-0.33 PbTiO3 crystal substrates by pulsed laser deposition technique .X ray diffraction analysis showed that the two kinds of films were single orientation grown , and the two films were under compressive and tensile stress respectively .Stress induced by lattice mismatch played great role on the resistance and metal-insulator phase transition temperature Tp of the films.Applying external electric field on LCMO/PMN-PT, thereby regulating the film stress, can also modulate the resistance and Tp . |
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| Keywords: | La0 8 Ca0 2 MnO3 thin films stress electoral transport properties |
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