摘要
采用3d9离子在四角对称中的高阶微扰公式,计算了LaSrGaO4:Cu2+晶体的电子顺磁共振(EPR)参量g因子g∥,g⊥和超精细结构常数A∥,A⊥.计算结果与实验值较好符合.由于晶体中顺磁杂质中心的EPR参量与其缺陷结构密切相关,本计算还获得了Cu2+杂质中心缺陷结构的信息.我们对上述结果进行了讨论.
Abstract: The EPR parameters (g factors g∥, g⊥ and hyperfine structure constants A∥, A⊥) for LaSrGaO4: Cu^2 + crystal are calculated from the high-order perturbation formulas of 3d^9 ion in tetragonal symmetry. The Calculated results are in agreement with the observed values. Since the EPR parameters are sensitive to the local structure of a paramagnetic impurity center, the defect structure of Cu^2+ center in LaSrGaO4 crystal is estimated. The results are discussed.
出处
《四川大学学报(自然科学版)》
CAS
CSCD
北大核心
2007年第3期666-668,共3页
Journal of Sichuan University(Natural Science Edition)
基金
重庆工学院科研基金(2005Z077)