| Structure and Transport Properties of La0.67Ca0.33Mn1-xAlxO3 |
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| 作者姓名： | 崔玉建 贾广强 韩雁冰 王新燕 葛洪良 张金仓 |
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| 基金项目： | 国家自然科学基金，浙江省自然科学基金，上海市教委资助项目，上海市重点学科建设项目 |
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| 摘 要： |
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| 关 键 词： | 稀土元素 铝 镧 金属元素 元素结构 LnMnO3 |
Structure and Transport Properties of La0.67Ca0.33Mn1-xAlxO3 |
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| Abstract: | The effects of Al ion doping on the Mn site were studied for the colossal magnetoresistance material La0.67Ca0.33MnO3. It is found that the volume of the crystal cell decreases monotonically when the population of Al3 increases across the entire doping range. As the Al3 population increases, the resistance of the material rises rapidly, while the insulator-metal transition temperature TIM decreases linearly. At small Al3 dosage, a thermal activation model properly describes the transport properties at T>TIM, while a metallic model is more suitable at T
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| Keywords: | metal materials structure and transport properties Al3 substitution La0 67Ca0 33MnO3 rare earths |
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