Тип публикации: статья из журнала

Год издания: 2025

Идентификатор DOI: 10.1134/S2075113324701648

Ключевые слова: lithium niobate crystal, double doping, OH groups, luminescence centers, point and complex defects, raman spectroscopy, laser conoscopy, photoinduced light scattering

Аннотация: Features of the defect structure of a nominally pure LiNbO_3stoich crystal and double-doped LiNbO₃:Zn:Mg (3.45:1.41 mol %) and LiNbO₃: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 LiNbO₃:Zn:Mg crystals obtained using different technologies have high resistance to damage by laser radiation. However, the LiNbO₃:Zn:Mg (3.45:1.22 mol %) crystal obtained by direct doping technology is characterized by lower compositional uniformity compared to the LiNbO₃: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 LiNbO₃: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 LiNbO₃:Zn:Mg (3.45:1.41 mol %) crystal obtained by homogeneous doping technology.

Журнал: Inorganic Materials: Applied Research

Выпуск журнала: Т. 16, № 2

Номера страниц: 278-290

ISSN журнала: 20751133

Место издания: Moscow

Издатель: Pleiades Publishing, Ltd.

• Titov R.A. (Tananaev Institute of Chemistry—Subdivision of the Federal Research Centre “Kola Science Centre of the Russian Academy of Sciences”)
• Smirnov M.V. (Tananaev Institute of Chemistry—Subdivision of the Federal Research Centre “Kola Science Centre of the Russian Academy of Sciences”)
• Bobreva L.A. (Tananaev Institute of Chemistry—Subdivision of the Federal Research Centre “Kola Science Centre of the Russian Academy of Sciences”)
• Teplyakova N.A. (Tananaev Institute of Chemistry—Subdivision of the Federal Research Centre “Kola Science Centre of the Russian Academy of Sciences”)
• Palatnikov M.N. (Tananaev Institute of Chemistry—Subdivision of the Federal Research Centre “Kola Science Centre of the Russian Academy of Sciences”)
• Biryukova I.V. (Tananaev Institute of Chemistry—Subdivision of the Federal Research Centre “Kola Science Centre of the Russian Academy of Sciences”)
• Masloboeva S.M. (Tananaev Institute of Chemistry—Subdivision of the Federal Research Centre “Kola Science Centre of the Russian Academy of Sciences”)
• Krylov A.S. (Kirensky Institute of Physics)
• Vtyurin A.N. (Siberian Federal University)
• Sidorov N.V. (Tananaev Institute of Chemistry—Subdivision of the Federal Research Centre “Kola Science Centre of the Russian Academy of Sciences”)

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