Email this article Point defects and dichroism in langasite and langatate crystals
- Authors: Kozlova N.S.1, Busanov O.A.2, Zabelina E.V.1, Kozlova A.P.1, Bykova M.B.1
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Affiliations:
- National University of Science and Technology “MISiS”
- ОАО Fomos-Materials
- Issue: Vol 61, No 2 (2016)
- Pages: 275-284
- Section: Physical Properties of Crystals
- URL: https://journals.rcsi.science/1063-7745/article/view/189902
- DOI: https://doi.org/10.1134/S1063774516020103
- ID: 189902
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Abstract
The hypotheses about the nature of color centers in langasite family crystals that are discussed in the literature are analyzed. Optical transmission spectra in the wavelength range of 200–800 nm are recorded for langasite and langatate crystals grown in atmospheres of argon and argon mixed with oxygen in different concentrations, both in the initial state and after isothermal annealings at 1000°C in nitrogen, in air, or in vacuum. Dichroism is observed in langasite and langatate crystals, and spectral dependences of the degrees of dichroism are plotted.
About the authors
N. S. Kozlova
National University of Science and Technology “MISiS”
Email: zabev@mail.ru
Russian Federation, Leninskii pr. 4, Moscow, 119049
O. A. Busanov
ОАО Fomos-Materials
Email: zabev@mail.ru
Russian Federation, ul. Buzheninova 16, Moscow, 107023
E. V. Zabelina
National University of Science and Technology “MISiS”
Author for correspondence.
Email: zabev@mail.ru
Russian Federation, Leninskii pr. 4, Moscow, 119049
A. P. Kozlova
National University of Science and Technology “MISiS”
Email: zabev@mail.ru
Russian Federation, Leninskii pr. 4, Moscow, 119049
M. B. Bykova
National University of Science and Technology “MISiS”
Email: zabev@mail.ru
Russian Federation, Leninskii pr. 4, Moscow, 119049
