| 钙钛矿型稀土锰氧化合物Nd0.5Sr0.4Pb0.1Mn1-x FexO3中Mn位的Fe替代效应 |
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| 引用本文： | 鲁 毅,李庆安,邸乃力,成昭华. 钙钛矿型稀土锰氧化合物Nd0.5Sr0.4Pb0.1Mn1-x FexO3中Mn位的Fe替代效应[J]. 物理学报, 2003, 52(6): 1520-1523 |
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| 作者姓名： | 鲁 毅 李庆安 邸乃力 成昭华 |
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| 作者单位： | (1)内蒙古包头师范学院物理系,包头 014030; (2)中国科学院物理研究所磁学国家重点实验室,北京 100080 |
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| 基金项目： | 中国科学院百人计划资助的课题. |
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| 摘 要： | 对Nd0.5Sr0.4Pb0.1Mn1-xFex O3系列多晶样品的结构，磁和转变特性进行了实验研究.在x=0.00—0.10的范围内获得了单相样品，Fe3+的替代并没有引起整个系列的结构变化，然而Mn位的掺杂却强烈地抑制了Nd 0.5Sr0.4Pb0.1MnO3的铁关键词：磁结构磁性P')" href="#">磁转变温度TP双交换作用
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| 关 键 词： | 磁结构 磁性 磁转变温度TP 双交换作用 |
| 文章编号： | 1000-3290/2003/52(06)/1520-04 |
| 收稿时间： | 2002-09-25 |
| 修稿时间： | 2002-09-25 |
Doping effect from substituting Fe for Mn in Nd0.5Sr0.4Pb0.1Mn1-xFexO3(x=0.0-0.1)compounds |
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| Lu Yi,Li Qing-An,Di Nai-Li and Cheng Zhao-Hua. Doping effect from substituting Fe for Mn in Nd0.5Sr0.4Pb0.1Mn1-xFexO3(x=0.0-0.1)compounds[J]. Acta Physica Sinica, 2003, 52(6): 1520-1523 |
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| Authors: | Lu Yi Li Qing-An Di Nai-Li Cheng Zhao-Hua |
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| Abstract: | Structure, magnetic and transport properties of polycrystalline Nd0.5 Sr0.4Pb0.1Mn1-xFexO3 Com pounds were experimentally studies. Single-phase samples were obtained in the range x=0.0—0.1 of Fe Content. There are no appreciable structure changes for the introduction of Fe. Mn-site doping favous a reduction of magnetic/resistive transport, at a rate of ～16K for 6% Fe, and an elevated resistivity. Metal-insulator transition disappears when the content of Fe exceeds ～0.08. The enhanced doping effects in Nd0.5Sr0.4Pb0.1Mn1-xFexO3 can be ascribed to the presence of Fe, which influences the concentration of mobile electron eg and restrain the double exchange interaction in the compounds. |
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| Keywords: | structure magnetic properties transition temperature TP double exchange interaction |
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