期刊
SUPERLATTICES AND MICROSTRUCTURES
卷 54, 期 -, 页码 181-187出版社
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.spmi.2012.11.018
关键词
Hydrothermal; ZnS:Fe2+; Photoluminiscence; Ferromagnetism
资金
- National Natural Science Foundation of China [61008051, 61178074]
- Twentieth Five-Year Program for Science and Technology of Education Department of Jilin Province [20110169]
- Science and Technology bureau of Key Program for Ministry of Education [20110705G]
- NSRL
- BSRF
The wurtzite-type ZnS:Fe2+ nanowires were prepared by a hydrothermal method at 180 degrees C without any surface-active agent. The results showed that the average diameter of the nanowires was about 10 nm. The Fe2+ ions were substitutionally incorporated into the ZnS host and the maximum concentration of the Fe2+ ions in the ZnS nanowires can reach to 5.81%. The absorption peak exhibited a small red-shift as the Fe doped ratio increased, which may be due to the increased size of the nanowires. After adding Fe2+ ions into the ZnS nanowires, no Fe-related emission peak can be observed and the emission intensity was quenched, indicating that the Fe2+ ions only acted as the nonradiative center. The ferromagnetism of the ZnS:Fe2+ nanowires was observed around room temperature, the mechanism of which was explained by the super-exchange mechanism. Crown Copyright (C) 2012 Published by Elsevier Ltd. All rights reserved.
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