Investigation on the EPR parameters and local structure for the Cu2+ center in ZnAl2O4 spinel

Investigation on the EPR parameters and local structure for the Cu2+ center in ZnAl2O4 spinel
复制标题

ZnAl2O4尖晶石Cu2中心的EPR参数和局域结构研究

DOI:
10.1016/j.jmmm.2015.04.066
复制
发表时间:
2015-09
影响因子:
2.7
通讯作者:
Hua-Ming Zhang
Hua-Ming Zhang
中科院分区:
材料科学3区
文献类型:
--
作者:
Hua-Ming Zhang

文献摘要

参考文献

被引文献

相似文献

应用四边形长八面体3d9离子的高阶摄动公式计算了znal2o4尖晶石中四边形Cu2+中心在温度t =4.2 K下的电子顺磁共振(EPR)参数(gfactorsg||,g⊥和超精细结构常数sa ||, a⊥)。在计算中,根据叠加模型估计了所需的晶体场参数,该模型使晶体场参数和EPR参数与[CuO6]10−团簇的四方畸变(由于Jahn-Teller效应,以沿4轴的相对四方伸长比ρ为特征)相关联。考虑到所研究的体系共价适中,基于聚类方法考虑了配体轨道和自旋轨道耦合的贡献。计算结果与实验数据吻合较好。
High-order perturbation formulas for a 3d9ion in tetragonally elongated octahedral was applied to calculate the electron paramagnetic resonance (EPR) parameters (gfactorsg||,g⊥and hyperfine structure constantsA||,A⊥) of the tetragonal Cu2+center in ZnAl2O4spinel at the temperatureT=4.2 K. In the calculations, the required crystal-field parameters are estimated from the superposition model which enables correlation of the crystal-field parameters and hence the EPR parameters with the tetragonal distortion (characterized by relative tetragonal elongation ratioρalong theC4axis due to the Jahn–Teller effect) of [CuO6]10−cluster, and the ligand orbital and spin–orbit coupling contributions are included on the basis of the cluster approach in view of moderate covalency for the studied systems. The calculated results show good agreement with the experimental data.
DOI: 10.1016/j.jnoncrysol.2011.02.009
发表时间: 2011-05
影响因子: 3.5
作者:
Huaming Zhang;Shao-yi Wu;Zhi-Hong Zhang
通讯作者: Huaming Zhang;Shao-yi Wu;Zhi-Hong Zhang
DOI: 10.1016/j.theochem.2009.12.005
发表时间: 2010-02
影响因子: --
作者:
Huaming Zhang;Shao-yi Wu;Li-Li Li-Li-Li;P. Xu
通讯作者: Huaming Zhang;Shao-yi Wu;Li-Li Li-Li-Li;P. Xu
DOI: 10.1002/pssb.200945131
发表时间: 2009-08
期刊: physica status solidi (b)
影响因子: --
作者:
W. Feng
通讯作者: W. Feng
DOI: 10.1016/j.physb.2010.01.094
发表时间: 2010-04
影响因子: 2.8
作者:
W. Feng;Weiqing Yang;W. Zheng;Honggang Liu
通讯作者: W. Feng;Weiqing Yang;W. Zheng;Honggang Liu
DOI: 10.1088/0034-4885/52/6/002
发表时间: 1989-06
影响因子: 18.1
作者:
D. Newman;B. Ng
通讯作者: D. Newman;B. Ng