Fe掺杂ZnO的室温铁磁性  

Room Temperature Ferromagnetism in Fe-doped ZnO

作　　者：李莉[1,2] 赵瑞斌[3] 侯登录[1] 叶小娟[1] 郭俊梅[1] 潘成福[1] 甄聪棉[1] 唐贵德[1] 

机构地区：[1]河北师范大学物理科学与信息工程学院,河北石家庄050016 [2]石家庄邮电职业技术学院电信工程系,河北石家庄050031 [3]河北医科大学基础部,河北石家庄050011

出　　处：《河北师范大学学报（自然科学版）》2009年第5期603-606,共4页Journal of Hebei Normal University：Natural Science

基　　金：河北省自然科学基金(E2005000178;E2007000280)

摘　　要：利用溶胶凝胶法制备了Zn1-xFexO粉末.X射线衍射表明,所有样品都具有纤维锌矿结构,没有发现其他的衍射峰.紫外可见光吸收谱发现,随着掺杂量的增加样品的吸收边发生红移,能隙减小,表明Fe离子进入ZnO的晶格,替代了Zn离子.光致发光谱发现,在467,482 nm出现了蓝光和近绿光.磁性测量表明,所有的样品都具有室温铁磁性,而且随着掺杂量的增加样品的饱和磁化强度增加.Zn1-xFexO powders （ x = 0.02,0.05,0.07） have been prepared by a sol-gel process technique. X-ray diffraction results reveal that all samples are single ZnO wurtzite structure. As Fe concentration increase in the Zn1 -xFexO, the absorption edges show red-shift. The decreasing band-gap energy with Fe concentration increasing confirmed that the Fe ions have entered into the ZnO crystal lattice. Photoluminescence measurements of Fe-doped samples illustrate blue emission and green emission centered at about 467,482 nm. The room temperature ferromagnetism of Zn1- x FexO （x = 0.02,0.05,0.07） is observed. The obtained saturation value of magnetization increases as Fe concentration increases.

关 键 词：溶胶凝胶 紫外可见光吸收谱 光致发光谱 室温铁磁性 

分 类 号：O482.523[理学—固体物理]