| 固相反应法制备Co掺杂ZnO的磁性和光学性能研究 |
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| 引用本文： | 刘学超,施尔畏,宋力昕,张华伟,陈之战.固相反应法制备Co掺杂ZnO的磁性和光学性能研究[J].物理学报,2006,55(5):2557-2561. |
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| 作者姓名： | 刘学超 施尔畏 宋力昕 张华伟 陈之战 |
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| 作者单位： | (1)中国科学院上海硅酸盐研究所，上海 200050; (2)中国科学院上海硅酸盐研究所，上海 200050；中国科学院研究生院，北京 100049 |
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| 摘 要： | 研究了以固相反应法制备Co掺杂ZnO粉体的磁性和光学性能，测试结果表明对于均匀掺杂的Zn0.95Co0.05O粉体，Co2+随机取代Zn2+的位置进入ZnO晶格.Co2+之间的3d自旋电子耦合交换作用使得近邻的Co2+自旋反平行，Zn0.95Co0.05O粉体在3—300K表现为顺磁性，而非铁磁性.
关键词：
ZnO
固相反应
稀磁半导体
顺磁性
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| 关 键 词： | ZnO 固相反应 稀磁半导体 顺磁性 |
| 文章编号： | 1000-3290/2006/55（05）2557-05 |
| 收稿时间： | 10 26 2005 12:00AM |
| 修稿时间： | 2005-10-262005-12-06 |
Magnetic and optical properties of Co doped ZnO powders synthesized by solid-state reaction |
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| Liu Xue-Chao,Shi Er-Wei,Song Li-Xin,Zhang Hua-Wei,Chen Zhi-Zhan.Magnetic and optical properties of Co doped ZnO powders synthesized by solid-state reaction[J].Acta Physica Sinica,2006,55(5):2557-2561. |
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| Authors: | Liu Xue-Chao Shi Er-Wei Song Li-Xin Zhang Hua-Wei Chen Zhi-Zhan |
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| Institution: | 1 Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China ; 2 Graduate School of Chinese Academy of Sciences, Beijing 100049, China |
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| Abstract: | Co doped ZnO powders were synthesized by the solid-state reaction. The magnetic and optical properties of the powders were investigated. The experimental results indicate that Zn2+ ions were substituted by Co2+ ions randomly. Zn0.95Co0.05O powders prefer paramagnetic state to ferromagnetic state from 3 K to 300 K due to coupling exchange interactions between Co 3d spins, which makes the nearest Co2+ antiparallel. |
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| Keywords: | ZnO |
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