| Magnetic properties of Nd0.5Pb0.5-xSrxMnO3 materials |
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| 作者姓名： | 鲁毅 李庆安 邸乃力 马骁 寇志起 罗志 成昭华 |
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| 作者单位： | StateKeyLaboratoryofMagnetism,InstituteofPhysics,ChineseAcademyofSciences,Beijing100080,China |
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| 摘 要： | The structure and magnetic properties of Nd0.5Pb0.5-xSrxMnO3 (0≤x≤0.4) manganites were systematically investigated. Significant changes in Curie temperature and metal-insulator (MI) transition temperature of the samples were observed. All samples exhibited a transition from paramagnetic semiconducting to ferromagnetic metallic state.Curie temperature Tc and the MI transition temperature Tp increased with increasing Sr content. We attributed these behaviours to the enhancing of both the double exchange mechanism and the Jahn-Teller electron-phonon coupling.
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| 关 键 词： | Nd0.5Pb0.5-xSrxMnO3 磁性 钕铅锶锰氧化物 磁性材料 结构 双交换相互作用 变化温度 中子衍射 Jahn-Teller畸变 巨磁致电阻效应 |
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