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Spectroscopic Properties of Bi12SiO20and Bi12TiO20Crystals Doped with Mn, Mn + P, Cr + P, Cr + Ga, and Cr + Cu

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Abstract

The absorption and circular dichroism spectra of Bi12SiO20and Bi12TiO20crystals codoped with Mn or Cr and a penta- (P5+), tri- (Ga3+), or divalent (Cu2+) element were studied. The results demonstrate that the sillenite crystals contain Mn and Cr in two oxidation states, 5+ and 4+. The introduction of P5+increases the fractions of Mn4+and Cr4+, while Ga3+and Cu2+have the opposite effect. The bands observed in the spectra are assigned to electronic transitions of [MnO4]4–and [MnO4]3–.

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Authors and Affiliations

  1. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii pr. 31, Moscow, 119991, Russia

    A. V. Egorysheva, Yu. F. Kargin, A. Ya. Vasil'ev, V. V. Volkov & V. M. Skorikov

  2. Moscow Institute of Physics and Technology, Institutskii proezd 9, Dolgoprudnyi, Moscow oblast, 141700, Russia

    V. I. Burkov

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  1. A. V. Egorysheva
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  2. V. I. Burkov
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  3. Yu. F. Kargin
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  4. A. Ya. Vasil'ev
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  5. V. V. Volkov
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  6. V. M. Skorikov
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Egorysheva, A.V., Burkov, V.I., Kargin, Y.F. et al. Spectroscopic Properties of Bi12SiO20and Bi12TiO20Crystals Doped with Mn, Mn + P, Cr + P, Cr + Ga, and Cr + Cu. Inorganic Materials 37, 817–824 (2001). https://doi.org/10.1023/A:1017991500219

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