Ferromagnetism in manganese and cobalt co-doped ZnO bulk samples

详细信息	查看全文 | 推荐本文 |

• 作者：Yongqiang Wang ; Yunxing Song ; Shiyan Yin ; Gongqi Yu ; Juhong Miao and SongLiu Yuan
• 关键词：Diluted magnetic semiconductors ; Ferromagnetism ; Bulk samples
• 刊名：Materials Science and Engineering ; B
• 出版年：2006
• 期刊代码：76_09215107
• 类别：ch
• 出版时间：15 July 2006
• 卷：131
• 期：1-3
• 页码：9-12
• 文件大小：185 K

摘要

The polycrystalline bulk samples with nominal composition Zn_1−x(Mn_1/2Co_1/2)_xO (x = 10%, 15%, 30%) were fabricated at 600 °C by the standard solid-state reaction method. The structural analysis shows that the lower doped samples (x < 15%) are single phase of wurtzite structure, while for the high-doped sample (x = 30%), beside the main peaks of wurtzite structure, the peaks of secondary phase are visible. Magnetization measurement indicates that all the samples show ferromagnetic ordering with T_c > 300 K. Based on the structural analyses, the experimental observation is discussed.