| 类钙钛矿结构的稀土锰氧化物中的导电机制 |
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| 引用本文： | 刘新典,刘金伟,李志青.类钙钛矿结构的稀土锰氧化物中的导电机制[J].河北工业大学学报,2001,30(5):85-88. |
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| 作者姓名： | 刘新典 刘金伟 李志青 |
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| 作者单位： | 河北工业大学文理学院, |
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| 摘 要： | 1951年Zener提出“双交换作用模型”以解释钙钛矿型锰氧化物中在居里温度处同时发生的铁磁相到顺磁相及金属－半导体转变,近年来,在这类材料中发现所谓的庞磁电阻效应,对其中的导电机制的研究有了新的进展,本文综述了类钙钛矿结构的稀土锰氧化物中导电机制的研究进展。
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| 关 键 词： | 双交换作用 小极化子 庞磁电阻 金属－半导体转变 导电机制 居里温度 稀土锰氧化物 钙钛矿结构 |
| 文章编号： | 1007-2373(2001)-05-0085-04 |
The Conducting Mechanism in Pervoskite Manganese Oxide |
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| LIU Xin-dian,LIU Jin-wei,LI Zhi-qing.The Conducting Mechanism in Pervoskite Manganese Oxide[J].Journal of Hebei University of Technology,2001,30(5):85-88. |
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| Authors: | LIU Xin-dian LIU Jin-wei LI Zhi-qing |
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| Abstract: | Zener propused the so called "double-exchange" model to explain the simultaneous electron and magnetic transition in pervoskite manganese oxide. Recently, colossal magnetoresistence was found in these compounds and development has been made in the conducting mechanism of these materials. A survey of the progress in the conducting mechanism is presented in this article. |
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| Keywords: | double-exchange small polaron colossal magnetoresistence metal-semiconductor transition |
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