Electronic Transport Properties of La2/3Ca1/3Mn0.98Cu0.02O3 Sintered at Different Temperature
来源期刊：Journal Of Wuhan University Of Technology Materials Science Edition2009年第2期
论文作者：胡清华
文章页码：300 - 303
摘 要：The sol-gel method was adopted to prepare series of La2/3Ca1/3Mn0.98Cu0.02O3 samples sintered at different temperatures, and the structure of samples, high-temperature electrical conductive mechanism and electronic transport properties of double-peak resistance were investigated. X-ray diffraction pattern indicates that the samples are in perovskite structures and obey the Variable-Rang Hopping Mechanism of ρ=ρ0exp[（T0/T）1/4] under high temperatures during the electrical conduction. In addition, based on the polycrystalline granular system surface and image, the reasonable explanation was given for the double-peak resistance phemomenon.
胡清华
School of Science, Wuhan University of Technology
摘 要：The sol-gel method was adopted to prepare series of La2/3Ca1/3Mn0.98Cu0.02O3 samples sintered at different temperatures, and the structure of samples, high-temperature electrical conductive mechanism and electronic transport properties of double-peak resistance were investigated. X-ray diffraction pattern indicates that the samples are in perovskite structures and obey the Variable-Rang Hopping Mechanism of ρ=ρ0exp[（T0/T）1/4] under high temperatures during the electrical conduction. In addition, based on the polycrystalline granular system surface and image, the reasonable explanation was given for the double-peak resistance phemomenon.
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