| 新型溶胶-凝胶工艺制备La0.5Ca0.5MnO3薄膜及性能分析 |
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| 引用本文： | 杨亮亮,殷明志,常亮亮.新型溶胶-凝胶工艺制备La0.5Ca0.5MnO3薄膜及性能分析[J].材料开发与应用,2011,26(2):41-44,50. |
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| 作者姓名： | 杨亮亮 殷明志 常亮亮 |
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| 作者单位： | 西北工业大学应用化学系,陕西西安,710129,中国 |
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| 摘 要： | 鉴于以醇盐为原料溶胶-凝胶制备La0.5Ca0.5MnO3薄膜工艺中存在诸多苛刻因素,本文以无机盐为原料采用溶胶-凝胶工艺在SiO2/Si(100)衬底上制备了La0.5Ca0.5MnO3薄膜.并用XRD、SEM和TEM等分析手段对薄膜进行了表征,通过不同磁场下电阻-温度(R-T)曲线,研究了样品的磁电阻(CMR)效应...
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| 关 键 词： | 溶胶-凝胶工艺 La0.5Ca0.5MO3薄膜 阻温特性 |
A Novel Fabrication and Characterization of Conductive La0.5Ca0.5MnO3 Films with Sol-gel Method |
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| YANG Liangliang,YIN Mingzhi,CHANG Liangliang.A Novel Fabrication and Characterization of Conductive La0.5Ca0.5MnO3 Films with Sol-gel Method[J].Development and Application of Materials,2011,26(2):41-44,50. |
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| Authors: | YANG Liangliang YIN Mingzhi CHANG Liangliang |
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| Affiliation: | (Chemical Engineering Department,Northwest Polytechnical University,Xian 710129,China) |
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| Abstract: | Basing on improving harsh terms of alkoxide sol-gel process,dense conductive La0.5Ca0.5MnO3 films on SiO2/Si(110) silicon substrates were fabricated by sol-gel method with corresponding inorganic salts.The samples were characterised by means of X-ray diffraction,SEM and TEM.CMR effect of the sample were studied against R-T curves.The results show that the films have a pseudocubic perovskite structure with uniform surface and grain size(about 30nm) was increased with annealing temperature.The resistivity at room temperature of La0.5Ca0.5MnO3 film was 0.0303Ω·cm by four-probe method.Magnetoresistance peak at 210K reached 14.5%. |
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| Keywords: | Sol-gel Method La0 5Ca0 5MO3 Film Resistance-temperature property |
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