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Cu-codoping inducing the room-temperature magnetism and p-type conductivity of ZnCoO diluted magnetic semiconductor |
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| Authors: | P Cao DX Zhao DZ Shen ZZ Zhang |
| Institution: | a Key Laboratory of Excited State Processes, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, 16 East Nan-Hu Road, Open Economic Zone, Changchun 130033, People's Republic of China b Graduate School of the Chinese Academy of Sciences, People's Republic of China c School of science, Changchun Institute of Technology, 395 Kuan-Ping Road, Chaoyang Zone, Changchun 130012, People's Republic of China d State Key Laboratory of Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, 16 East Nan-Hu Road, Open Economic Zone, Changchun 130033, People's Republic of China |
| Abstract: | Successful synthesis of room-temperature ferromagnetic semiconductors, Cu-codoped ZnCoO films are obtained by sol-gel method. It is found that the essential ingredient in achieving room-temperature ferromagnetism is Cu-codoping. By Hall-effect measurement a p-type conductivity was observed for the Cu-codoped films, the hole concentration increases with the increase in Cu concentration. XPS result confirmed Cu ions are univalent in the films, which induced the room-temperature ferromagnetism. |
| Keywords: | p-Type conductivity Room-temperature magnetism |
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