摘要
使用溶胶-凝胶法,制备了Fe掺杂的ZnO粉末衡磁半导体材料。通过X射线衍射对样品的晶格结构进行了分析,发现衍射峰的峰位随着Fe掺杂量出现偏移。当掺杂浓度低于6.66%时,Fe较好地替代了Zn的晶格位置,当掺杂浓度达到6.66%时出现杂相峰。使用超导量子干涉仪对所制备的磁性材料进行表征,得到了材料磁化率随温度变化关系曲线,并观察到明显的低温磁滞现象。对其磁性来源进行了分析。
A Zn1-xFexO diluted magnetic semiconductor was synthesized with Sol-Gel method. Combining zinc acetate dehydrate with FeCl2 in a certain percentage and dissolve in ethanol, using lactic acid as stabilizer, transparent sol can be synthesized after three hours reaction. Powder sample can be formed through the process of drying by distillation, elimination of organics and heat processing. Crystal structure of Zn1-xFxO sample was analyzed with X-ray diffraction, and only ZnO diffraction peaks can be found with doping concentration lower than 6.66%. An increase in the hexagonal lattice parameters of ZnO is observed on increasing the Fe concentration. M-T curve of the powder material was measured with Superconducting Magnet System, the magnetic loop can be observed at the temperature of 10 K.
出处
《发光学报》
EI
CAS
CSCD
北大核心
2008年第1期149-151,共3页
Chinese Journal of Luminescence
基金
教育部跨世纪人才基金
教育部重点项目(105041)
自然基金(90401006
10434030和90301004)
"973"计划(2003CB314707)
华南理工大学特种功能材料及其制备新技术教育部重点实验室资助项目
关键词
溶胶凝胶法
稀磁半导体
ZNO
sol-gel method
diluted magnetic semiconductor
ZnO
