波谱学杂志 ›› 2009, Vol. 26 ›› Issue (3): 408-412.

• 研究简报 • 上一篇    下一篇

掺铜PTO晶体顺磁共振谱及局域结构的理论研究

龚劲涛; 王利娟   

  1. 1.绵阳师范学院 物理与电子工程学院, 四川 绵阳 621000; 2.内江师范学院 物理与电子信息工程学院, 四川 内江 641112; 3.西南民族大学 电气信息工程学院, 四川 成都 610041
  • 收稿日期:2009-02-09 修回日期:2009-03-08 出版日期:2009-09-05 发布日期:2010-01-04
  • 通讯作者: 龚劲涛

Theoretical Investigation of the EPR Spectra and Local Structure of Cu2+Doped PTO Crystal

GONG Jin-tao; WANG Li-juan   

  1. 1.School of Physics and Electron, Mianyang Normal University, Mianyang 621000, China; 2.Department of Physics and Electronic Engineering, Neijiang Normal College, Neijiang 641112, China; 3.School of Electrical Information Engineering, Southwest Nationalities University, Chengdu 610041, China
  • Received:2009-02-09 Revised:2009-03-08 Online:2009-09-05 Published:2010-01-04
  • Contact: GONG Jin-tao

摘要: 基于晶体场理论,本文采用重叠模型和3d9电子组态在畸变四角晶场中的g因子和超精细结构常数A的三阶微扰计算公式以及钛酸铅PbTiO3 (PTO): Cu2+晶体的局域结构与EPR谱之间的定量关系,合理解释了PTO: Cu2+晶体的EPR谱及局域晶体结构,所得结果与实验观测相符合. 

关键词: 顺磁共振(EPR), 晶体场理论, 重叠模型, PTO: Cu2+

Abstract: The crystalfield theory was used to simulate the electron paramagnetic resonance (EPR) spectra of Cu2+-doped PbTiO3 (PTO) crystal and to study the local lattice structure of the crystal. The simulations used the superposition model, the third-order perturbation formula of g factor and the hyperfine structure constants A for the 3d9 electronic configuration in the distorted tetragonal crystal-field. The quantitative relationship between the local lattice structure of the Cu2+-doped PTO crystal and the corresponding EPR spectrum was established. The results obtained by theoretical simulations were found in good agreement with the experimental results.

Key words:

electron paramagnetic resonance, crystal-field theory, superposition model, PTO, Cu2+

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