掺杂Nd^(3+)离子CsCdBr_3晶体光谱的理论分析  

Theoretical Analysis of Spectra for Nd^(3+) Ions in CsCdBr_3 Crystals

作　　者：苏萍[1] 李邦兴[1] 

机构地区：[1]重庆理工大学光电信息学院,重庆400054

出　　处：《重庆理工大学学报（自然科学）》2015年第3期21-24,共4页Journal of Chongqing University of Technology：Natural Science

基　　金：国家自然科学基金资助项目(11347172);重庆市基础与前沿研究计划一般项目(cstc2013jcyj A0688)

摘　　要：运用稀土自由离子理论和晶体场理论,通过对掺杂Nd3+离子的CsCdBr3晶体的发光光谱的计算分析,分别拟合了实验光谱数据中的28、47和65条能级,得出理论晶场能级与实验值的标准差分别为3.83,12.367和25.852 cm-1。该结果比已有的拟合结果小得多,表明此计算结果与实验光谱吻合得较好,说明拟合过程和方法是合理的。同时得到了合理的自由离子参量和晶场参量,为进一步研究稀土离子在晶体材料中受到晶体场作用的各种物理机制打下基础。The optical spectra of Nd3 ＋in CsCdBr3 were calculated by using the free rare earth ion theory and crystal field theory. Respectively,28,47,65 experimental crystal field levels were fitted,with the standard deviations of 3. 83 cm- 1,12. 367 cm- 1,25. 852 cm- 1. These deviations are significantly smaller than those in previous work. The calculated energy levels fit better with the experimental data,which shows that the calculation process and the method are reasonable. Through this fitting procedure,the reasonable free-ion and crystal-field parameters have been obtained. It is beneficial for further research on the physical mechanisms of crystal field of rare earth ions in crystals.

关 键 词：CsCdBr3 Nd3+ 晶场能级 拟合 

分 类 号：O562.31[理学—原子与分子物理]