J4 ›› 2009, Vol. 47 ›› Issue (6): 1282-1286.

• 物理 • 上一篇    下一篇

Fe掺杂ZnO稀磁半导体的结构与磁性

刘惠莲1,2,3, 张永军1, 王雅新1, 魏茂斌1, 杨景海1   

  1. 1. 吉林师范大学 物理学院, 吉林 四平 |136000|2. 中国科学院 长春光学机械与物理研究所激发态重点实验室, |长春 130033;
    3. 中国科学院 研究生院, 北京 100049
  • 收稿日期:2008-11-26 出版日期:2009-11-26 发布日期:2010-01-07
  • 通讯作者: 杨景海 E-mail:jhyang1@jlnu.edu.cn

Structure and Magnetic Properties of Fe\|Doped ZnO Dilute Magnetic Semiconductors

LIU Hui lian1,2,3, ZHANG Yong jun1,  |WANG Ya xin1,  |WEI Mao bin1,   |YANG Jing hai1   

  1. 1. College of Physics, Jilin Normal University, Siping 136000, Jilin Province, China;2. Key Laboratory of Excited State Processes, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, |China|3. Graduate University of |Chinese Academy of Sciences, Beijing 100049, China
  • Received:2008-11-26 Online:2009-11-26 Published:2010-01-07
  • Contact: YANG Jing hai E-mail:jhyang1@jlnu.edu.cn

摘要:

以Fe(NO3)3·9H2O与Zn(NO3)2·6H2O为原料, 与适量的柠檬酸配制成溶液, 采用溶胶\|凝胶(so|-gel)法合成干凝胶前驱体, 将前驱体在空气及氩气气氛中烧结得到Zn1-xFexO样品, 并用X射线衍射(XRD)、 透射电子显微镜(TEM)、 X射线光电子能谱(XPS)和振动样品磁强计(VSM)对所制备样品的结构和磁性进行研究. 结果表明, 在氩气中烧结时, Fe在ZnO中的掺杂摩尔分数小于4%,  在空气中烧结时, Fe在ZnO中的掺杂摩尔分数约为10%, 在两种气氛下制备相同掺杂摩尔分数样品的磁性不同, 是由于Fe在样品中所处的价态不同, 从而影响了样品的结构及磁性. 

关键词: 稀磁半导体, Fe掺杂ZnO, 溶胶-凝胶法

Abstract:

The dry gel precursors were synthesized from Zn nitrate and Fe nitrate with a citric acid solution by means of  sol\|gel method. We obtained a series of Zn1-xFexO after the precursors were sintered in air and in argon. The structure and magnetic properties of Zn1-xFexO were characterized by  virtue of X\|ray diffractometer (XRD), transmission electron microscope (TEM), X\|ray photoelectron spectroscopy (XPS) and vibration sample magnetometer (VSM). The results show  that the doping concentration of Fe in ZnO sintered in  air is less than 4%, while sintering in argon,  the doping concentration of Fe in ZnO is  close to 10%. The magnetic performance of sample with the same doping concentration prepared in two gas atmospheres was different. XPS analysis shows  that Fe existed in different valences in samples  prepared in different sintering atmospheres so as to affect the structure and magnetic performance of samples.

Key words: diluted magnetic semiconductors, Fe doped ZnO, sol-gel method

中图分类号: 

  • O472.5