Investigation of the Gyrotropy in the Spectral Region of the Absorption "Shoulder" of the Oxide Crystal Bi12SiO20
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Published:2022-05-02
Issue:4
Volume:75
Page:510-518
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ISSN:2367-5535
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Container-title:Proceedings of the Bulgarian Academy of Sciences
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language:
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Short-container-title:C. R. Acad. Bulg. Sci.
Author:
Dimov Todor,Iliev Iliya,Hristova Antonina
Abstract
This paper presents the research of the gyrotropy of a pure Bi$$_{12}$$SiO$$_{20}$$ (BSO) and doped Bi$$_{12}$$SiO$$_{20}$$:Al (BSO:Al) crystals in the spectral region of ``absorption shoulder'' using measurements of the spectra of the natural optical rotation, the magneto-optical rotation and the optical spectroscopy. It is shown that the difference in the absorption of the BSO and BSO:Al crystals is related to the presence of two types of defects in the crystals BSO:Al – impurities $$\rm Al_{Si}^{3+}$$ in $$\rm[Al_{Si}^{3+}O_4]$$ and $$\rm Bi_{Si}^{3+}$$ in $$\rm[Bi_{Si}^{3+}O_4]$$. A ``red-shift'' of the optical rotation spectrum of BSO:Al crystals has also been observed relative to the optical rotation spectrum of BSO crystals.
Publisher
Prof. Marin Drinov Publishing House of BAS (Bulgarian Academy of Sciences)
Subject
Multidisciplinary