期刊
JOURNAL OF PHYSICAL CHEMISTRY C
卷 114, 期 41, 页码 17569-17573出版社
AMER CHEMICAL SOC
DOI: 10.1021/jp106767n
关键词
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资金
- Chinese Academy of Sciences
- National Science Fund for Distinguished Young Scholar [60925016]
- National High Technology Research and Development Program of China [2009AA034101]
- Postdoctoral Foundation [O9T1050000]
Co-doped In2O3 nanocrystals showing room-temperature ferromagnetism have been successfully prepared by a simple sol-gel synthesis route. The sample displays it clear ferromagnetism behavior above 300 K. Phase and structure analyses reveal that the nanocrystals are crystallized with Co ions substituted for In ions in the In2O3 matrix, and no trace of secondary phases or clusters is detected. The experimental results are explained theoretically by first-principles calculations based on density functional theory, which indicate that the native ferromagnetic behavior of Co-doped In2O3 could be mainly ascribed to the strong d-d coupling of the magnetic ions.
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