Influence of Fe-doping on the structural, optical and magnetic properties of ZnO nanoparticles
Influence of Fe-doping on the structural, optical and magnetic properties of ZnO nanoparticles
复制标题
Fe掺杂对ZnO纳米颗粒结构、光学和磁性能的影响
DOI：
10.1016/j.jmmm.2012.05.054
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发表时间：
2012-10
影响因子：
2.7
通讯作者：
Xiaoyang Liu
中科院分区：
文献类型：
--
作者：
Jing Xie;Xiaohong Yu;Long Chen;Xiaoyang Liu
采用两步法在无催化剂的条件下合成了Zn 1-xFexO（x=0-0.05）纳米粒子。在80°C的固液体系中，通过金属Fe片源将Fe掺杂到ZnO中，并通过在300°C下退火获得Zn 1 −xFexO纳米颗粒。利用X射线衍射、X射线光电子能谱（XPS）和透射电子显微镜对Zn 1 −xFexO的结构进行了表征。通过红外光谱和紫外-可见光谱测定了其光学性质。结果证实，由于Fe掺杂，ZnO的结晶度劣化。XPS结果表明，在典型的Zn 0.95 Fe 0.05 O样品中存在Fe 0+和Fe 3+的混合物。Zn 1 −xFexO的光学带隙随着Fe掺杂量的增加而增加。在所有的Fe掺杂ZnO样品中观察到室温铁磁性。
Zn1–xFexO (x=0–0.05) nanoparticles were synthesized without a catalyst by a two-step method. Fe was doped into ZnO by a source of metallic Fe sheets in a solid–liquid system at 80°C, and the Zn1−xFexO nanoparticles were obtained by annealing at 300°C. X-ray diffraction, X-ray photoelectron spectroscopy (XPS) and transmission electron microscopy were used to characterize the structural properties of the as-grown Zn1−xFexO. The optical properties were determined by Infrared and Ultraviolet–visible spectroscopy. The results confirm that the crystallinity of the ZnO is deteriorated due to Fe-doping. XPS results show that there is a mixture of Fe0+and the Fe3+in the representative Zn0.95Fe0.05O sample. The optical band gap of Zn1−xFexO is enhanced with increasing of Fe-doping. Room temperature ferromagnetism was observed in all the Fe-doped ZnO samples.
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