在绿柱石晶体中掺入Fe^3＋的吸收光谱研究

绿柱石是一种结构较复杂的硅酸盐矿物，其晶体结构中Al^3＋可以被Fe^2＋，Fe^3＋等取代，对这种晶体的吸收光谱的研究有助于认识绿柱石晶体的结构，从而更好的使这种晶体得到应用．本文引入平均共价因子Ⅳ，在立方晶场下考虑电子静电相互作用，通过完全对角化的方法对掺入Fe^3＋的绿柱石晶体的吸收光谱进行理论计算，并对实验结果中吸收峰进行了识别．结果表明，实验与理论符合的比较好．

An investigation of absorption spectra of Fe3+ doped in beryl crystal

Beryl is a kind of silicate minerals of complicated structure. Al^3＋can be replaced by Fe^2＋ or Fe^3＋. The research about the absorption spectrum of this crystal helps us understand the structure of beryl crystal, which serves to make this crystal applied. This paper quotes an average covalent factor N and considers the electrostatic and cubic crystal field interaction. The absorption spectra of Fe^3＋ dropped in beryl crystal is calculated theoretically by using the complete diagonlizing method, and at the same time, the absorption peaks of experimental results are identified. The result shows that the calculated results are in agreement with experiments.