| La4/3Ca5/3Mn2O7的结构、电输运及磁性质研究 |
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| 引用本文： | 刘莉,王永强,田召明,李派,汪川惠,尹诗岩.La4/3Ca5/3Mn2O7的结构、电输运及磁性质研究[J].低温物理学报,2007,29(2):90-93. |
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| 作者姓名： | 刘莉 王永强 田召明 李派 汪川惠 尹诗岩 |
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| 作者单位： | 华中科技大学物理系,武汉,430074;华中科技大学物理系,武汉,430074;华中科技大学物理系,武汉,430074;华中科技大学物理系,武汉,430074;华中科技大学物理系,武汉,430074;华中科技大学物理系,武汉,430074 |
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| 摘 要： | 采用溶胶-凝胶法,在不同温度烧结制备了名义组分为La4/3Ca5/3Mn2O7的多晶样品.X射线结构分析以及电、磁输运性质的测量表明:La4/3Ca5/3Mn2O7形成的是La2/3Ca1/3MnO3和CaO的混合物.
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| 关 键 词： | 超大磁电阻 X射线衍射 绝缘体-金属转变 |
| 修稿时间： | 01 19 2007 12:00AM |
STUDY OF STRUCTURE, ELECTICAL AND MAGNETIC PROPERTIES OF La4/3 Ca5/3 Mn2 O7 |
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| Liu Li,Wang Yong-qiang,Tian Zhao-ming,Li Pai,Wang Chuan-hui,Yin Shi-yan.STUDY OF STRUCTURE, ELECTICAL AND MAGNETIC PROPERTIES OF La4/3 Ca5/3 Mn2 O7[J].Chinese Journal of Low Temperature Physics,2007,29(2):90-93. |
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| Authors: | Liu Li Wang Yong-qiang Tian Zhao-ming Li Pai Wang Chuan-hui Yin Shi-yan |
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| Institution: | Department of Physics, Huazhong University of Science and Technology, Wuhan 430074 |
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| Abstract: | Polycrystalline La4/3Ca5/3Mn2O7 samples were prepared by a sol-gel method and followed by sintering at different temperatures. X-ray diffraction (XRD) was used to analyze the structure and the temperature dependence of electrical resistivity and magnetization were measured to observe the transport properties. Based on the measurement results, we point out that La4/3Ca5/3Mn2O7 is composed of La2/3Ca1/3MnO3 and CaO. |
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| Keywords: | colossal magnetoresistance X-ray diffraction insulator-metal transitionu |
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