| Correction to the Metal—Insulator Transition Temperature due to Cation Size and Strain Effects for Colossal Magnetoresistance Perovskites |
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| 引用本文： | 袁松柳,刘洁,等.Correction to the Metal—Insulator Transition Temperature due to Cation Size and Strain Effects for Colossal Magnetoresistance Perovskites[J].中国物理快报,2002,19(11):1675-1678. |
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| 作者姓名： | 袁松柳 刘洁 |
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| 作者单位： | DepartmentofPhysics,HuazhongUniversityofScienceandTechnology,Wuhan430074 |
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| 摘 要： | A phenomenological expression of the metal-insulator transition temperature is proposed for AMnO3 manganese perovskites by taking into account the distortion of the Mn-O-Mn bond due to A-cation size and the strain-dependent effect due to performed Jahn-Teller distortions ,independently.Using reasonable physical parameters ,the calculated results give excellent agreement with experimental data obtained in polycrystalline samples of La2/3(Ca1-xBax)1/3 MnO3,providing a strong support to this approach.
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| 关 键 词： | 金属绝缘子 应力效应 磁阻 |
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