三角畸变立方晶场中d2离子的吸收光谱

用不可约张量方法,由广义Wigner-Eckart定理得出两个推论及有关结果。对三角畸变立方晶场中的d²离子,提出了从统一模型出发,计入V_c及(V_tr+H_s)产生的所有可能的相互作用,全面处理光谱与D,g_‖,g_⊥问题的有效方法。应用于钒刚玉,通过全面拟合光谱与D,g_‖,g_⊥实验值,得到的结果与实验值满意地符合。对所用的模型、方法等问 关键词：

THE ABSORPTION SPECTRUM OF d2 IONS IN ATRIGONALLY DISTORTED CUBIC CRYSTAL FIELD

By using the irreducible tensor operator method, two corollaries have been derived from generalized Wigner-Eckart theorem and the results associated with the corollaries are obtained. For the. d² ions in a trigonally distorted cubic crystal field, the effective method dealing with overall problems of D, g_‖, g_⊥ and absorption spectrum has been suggested on the basis of unified model, in which all possible interaction of V_c and (V_tr + H_s) have been considered.In application to vanadium corundum, successful results in agreement with the experiments are obtained by overall fitting of the theoretical values to the observed values of D,g_‖, g_⊥ and absorption spectrum.The problems concerned in our model and methods have been discussed.