Optical Properties, Structural Homogeneity, and Defect Centers of Double-Doped LiNbO3:Zn:Mg Single Crystals Obtained Using Different Technologies : научное издание
Библиографическое описание:Optical Properties, Structural Homogeneity, and Defect Centers of Double-Doped LiNbO3:Zn:Mg Single Crystals Obtained Using Different Technologies : научное издание / R. A. Titov [et al.]. - Текст : непосредственный // Inorganic Materials: Applied Research. - 2025. - Т. 16, № 2. - P. 278-290. - This work was carried out with partial financial support from the Government of the Murmansk Region for research projects of young scientists (no. 201 dated November 27, 2023) and within the framework of the state assignment of the Ministry of Science and Higher Education of the Russian Federation (registration number FMEZ-2025-0055). - ISSN 2075-1133. - ISSN 2075-115X, DOI 10.1134/S2075113324701648.
Аннотация:Features of the defect structure of a nominally pure LiNbO<sub>3stoich</sub> crystal and double-doped LiNbO<sub>3</sub>:Zn:Mg (3.45:1.41 mol %) and LiNbO<sub>3</sub>:Zn:Mg (3.45:1.22 mol %) single crystals have been studied using Raman spectroscopy, infrared absorption spectroscopy, photoluminescence, laser conoscopy, and photoinduced light scattering. The material for the study has been obtained using homogeneous and direct doping technology. It has been shown that double-doped LiNbO<sub>3</sub>:Zn:Mg crystals obtained using different technologies have high resistance to damage by laser radiation. However, the LiNbO<sub>3</sub>:Zn:Mg (3.45:1.22 mol %) crystal obtained by direct doping technology is characterized by lower compositional uniformity compared to the LiNbO<sub>3</sub>:Zn:Mg (3.45:1.41 mol %) crystal obtained by homogeneous doping technology. Raman spectra have showed that the features of the defect structure of double-doped LiNbO<sub>3</sub>:Zn:Mg crystals are largely determined by the magnesium impurity. This may be the reason that the influence of the ordering mechanism of magnesium cations (~1.22–1.44 mol %) prevails over the influence of the disordering mechanism of zinc cations (~3.45 mol %) on the features of the structural units of the cation sublattice. It has been found that the lowest concentration of OH groups and photoluminescence intensity in the near-IR region is characteristic of the LiNbO<sub>3</sub>:Zn:Mg (3.45:1.41 mol %) crystal obtained by homogeneous doping technology.
Держатель оригинала документа:Kirensky Institute of Physics, Siberian Federal University, Tananaev Institute of Chemistry—Subdivision of the Federal Research Centre “Kola Science Centre of the Russian Academy of Sciences”
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