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Fe掺杂ZnO的室温铁磁性 被引量：2

Room Temperature Ferromagnetism in Fe-doped ZnO
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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.
作者 李莉 赵瑞斌 侯登录 叶小娟 郭俊梅 潘成福 甄聪棉 唐贵德
机构地区 河北师范大学物理科学与信息工程学院 石家庄邮电职业技术学院电信工程系 河北医科大学基础部
出处 《河北师范大学学报（自然科学版）》 CAS 北大核心 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)
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 sol-gel UV-absorption photoluminescence ferromagnetism
分类号 O482.523 [理学—固体物理]
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参考文献16

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同被引文献46

  • 1文剑锋,刘兴种,曾毅,高俊,张凤鸣,都有为.掺铁氧化锌室温磁性半导体[J].功能材料,2004,35(z1):1180-1181. 被引量：2
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  • 7Debjanai K.,Mandal S.K.,Paulose P.L.,et al.,Ferromagnetism in Fe-doped ZnO nanocrystals:Experiment and theory[J].Phys.Rev.B,2007,75:144404.
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河北师范大学学报（自然科学版）
2009年 第5期

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