Abnormal phase transition and magnetic properties in Cu, Fe co-doped In2O3 nanocrystals

被引：24
作者：
Chu, Dewei [1 ,2 ]
Zeng, Yu-Ping [1 ]
Jiang, Dongliang [1 ]
机构：
[1] Chinese Acad Sci, Shanghai Inst Ceram, Shanghai 200050, Peoples R China
[2] Chinese Acad Sci, Grad Sch, Beijing 100046, Peoples R China
来源：
APPLIED PHYSICS LETTERS | 2008年 / 92卷 / 18期
关键词：
D O I：
10.1063/1.2920818
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Fe, Cu co-doped In2O3 nanocrystals were synthesized by a coprecipitation method. Phase analyses revealed that Fe ions have high solubility (up to 15.4 at. %) in the In2O3 matrix, while the Cu ions strongly restrain In2O3 phase transition from cubic to hexagonal. Raman spectroscopy shows that by adding Cu ions, the defect concentration increases. The samples show no evidence of ferromagnetism by additional Cu doping, indicating that Cu content might be a key point to realize room temperature ferromagnetism in Fe doped In2O3. (c) 2008 American Institute of Physics.
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