| Magnetic properties of Nd0.5Pb0.5—xSrxMnO3 materials |
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| 引用本文： | 鲁毅,李庆安,邸乃力,马骁,寇志起,罗志,成昭华. Magnetic properties of Nd0.5Pb0.5—xSrxMnO3 materials[J]. 中国物理, 2003, 12(7): 789-791 |
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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： | State Key Laboratory of Magnetism, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China;State Key Laboratory of Magnetism, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China;State Key Laboratory of Magnetism, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China;State Key Laboratory of Magnetism, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China;State Key Laboratory of Magnetism, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China;State Key Laboratory of Magnetism, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China;State Key Laboratory of Magnetism, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China |
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| 基金项目： | Project supported by the "Hundred Talents Program" of Chinese Academy of Sciences, the National Natural Science Foundation of China (Grant No 50272082) and the State Key Development Program for Basic Research of China (Grant No 2001 CB610605). |
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| 摘 要： | The structure and magnetic properties of Nd_{0.5}Pb_{0.5-x}Sr_xMnO_3 (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 T_C and the MI transition temperature T_p 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： | structure magnetic properties double exchange interaction transition temperature T_p Jahn－Teller distortion neutron diffraction. |
| 收稿时间： | 2002-12-26 |
| 修稿时间： | 2003-04-08 |
Magnetic properties of Nd0.5Pb0.5-xSrxMnO3 materials |
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| Lu Yi,Li Qing-An,Di Nai-Li,Ma Xiao,Kou Zhi-Qi,Luo Zhi and Cheng Zhao-Hua. Magnetic properties of Nd0.5Pb0.5-xSrxMnO3 materials[J]. Chinese Physics, 2003, 12(7): 789-791 |
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| Authors: | Lu Yi Li Qing-An Di Nai-Li Ma Xiao Kou Zhi-Qi Luo Zhi Cheng Zhao-Hua |
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| Affiliation: | State Key Laboratory of Magnetism, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China |
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| Abstract: | The structure and magnetic properties of Nd_{0.5}Pb_{0.5-x}Sr_xMnO_3 (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 T_C and the MI transition temperature T_p 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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| Keywords: | structure magnetic properties double exchange interaction transition temperature T_p Jahn－Teller distortion neutron diffraction. |
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