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Absorption and circular-dichroism spectra of iron-doped berlinite crystals |
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| Authors: | V. I. Burkov A. V. Egorysheva Yu. F. Kargin A. I. Motchanyi P. P. Shvanskii |
| Affiliation: | (1) Moscow Institute of Physics and Technology, Institutskii per. 9, Dolgoprudnyi, Moscow oblast, 141700, Russia;(2) Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii pr. 31, Moscow, 117907, Russia;(3) All-Russia Research Institute of Synthesis of Mineral Materials, Institutskaya ul. 1, Aleksandrov, Vladimir oblast, 601600, Russia |
| Abstract: | Absorption and circular-dichroism spectra of iron-doped AlPO4 crystals have been studied. For the first time, the experimental data on the electronic states of the [FeO4]5? complex are obtained in the range from 190 to 350 nm with due regard for the interactions that cannot be described within the one-electron approximation. The bands observed in the absorption and circular-dichroism spectra are attributed to corresponding electronic transitions. The advantages of the use of crystal-field-induced circular dichroism in comparison with other spectroscopic methods in the analysis of the electronic states of impurity ions in gyrotropic crystalline matrices are considered on the [FeO4]5? complex. |
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