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采用光谱方法研究了氧化物体系中Eu2+的价态稳定和转换问题．研究表明体系中Eu2+的价态稳定与取代离子的半径、电荷及基质晶相等密切相关．运用晶格能理论和晶体结构变化对实验结果进行了计算和讨论．
The spectroscopic method was used to study the valence stability and transition of Eu2 + in oxide system. The results show that the valence stability of Eu2 + in the system is closely related to the radius of substituted ions, charge and matrix crystal. The experimental results are calculated and discussed by using the theory of lattice energy and the change of crystal structure.