Open AccessDetermination of OH-groups concentration, and point defects in lithium niobate crystals.
Author(s) -
А. А. Габаин
Publication year - 2020
Publication title -
transaction kola science centre
Language(s) - English
Resource type - Journals
ISSN - 2307-5252
DOI - 10.37614/2307-5252.2020.3.4.007
Subject(s) - raman spectroscopy , lithium niobate , octahedron , absorption (acoustics) , infrared spectroscopy , raman scattering , materials science , infrared , doping , absorption spectroscopy , analytical chemistry (journal) , lithium (medication) , spectral line , crystallographic defect , chemistry , crystallography , crystal structure , optics , optoelectronics , endocrinology , physics , chromatography , astronomy , composite material , organic chemistry , medicine
The analysis of structural particularities of nominally pure and doped LiNbO3single crystals was performed by methods of Raman light scattering and infrared absorption. The concentration of OH groups, as well as the concentration of point defects is calculated from IR absorption spectra in the region of stretching vibrations of OH groups. A correlation has been determined in behavior of IR absorption spectra bands of strongly doped LiNbO3:Zn crystals with the behavior of the Raman spectra band that correspondsto stretching bridge vibrations of oxygen atoms in octahedra along the polar axis.
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