Zobrazeno 1 - 10
of 75
pro vyhledávání: '"Natalya A. Teplyakova"'
Publikováno v:
Inorganic Materials. 57:1028-1034
Publikováno v:
Journal of Structural Chemistry. 62:1200-1208
The work considers the influence of various types of equilibrium defects on photovoltaic and diffusion fields and on the band gap of nominally pure and zinc-doped lithium niobate crystals. Concentrations of OH groups and point defects in the NbLi cat
Publikováno v:
Inorganic Materials. 57:701-709
This paper reports a process for the growth of zinc–erbium codoped lithium niobate single crystals using a growth charge synthesized from a Nb2O5:Zn:Er precursor and Li2CO3. Characterization of the LiNbO3:Zn:Er crystals by high-speed evaluation of
Publikováno v:
Technical Physics. 66:59-66
It is shown that application of B2O3 as a flux allows one to obtain nominally pure composition-homogeneous LiNbO3 crystals characterized by high, close-to-stoichiometry ordering of structural units of the cation sublattice and high resistance to lase
Publikováno v:
Transaction Kola Science Centre. 11:189-195
The analysis of structural particularities and optical properties of LiNbO3 : B (0,55, 0,69 and 0,83 mol. % B2O3) was performed by methods of Raman and photoinduced light scattering, infrared absorption and laser conoscopy. It has been established th
Publikováno v:
Transaction Kola Science Centre. 11:195-201
The analysis of structural particularities of nominally pure LiNbO3 : B grown with using of B2O3flux was performed by methods of Raman and photoinduced light scattering, infrared absorption andlaser conoscopy. It was established that the non-metallic
Publikováno v:
Transaction Kola Science Centre. 11:43-49
Nominally pure and doped with zinc in a wide concentration range lithium niobate crystals were studied using photoinduced light scattering. Using the parameters of photo-induced scattered light, we determined the values of the photovoltaic and diffus
Publikováno v:
Solid State Phenomena. 312:140-147
It was shown that laser conoscopy can visually detect even slight changes in the optical characteristics of a crystal when it is doped. It has been found that the defective structure of LiNbO3:Zn (4.5 mol. %), LiNbO3:Mg (3.0–5.5 mol.%) crystals ass
Photoluminescence and Features of the Defective Structure of Nominally Pure Lithium Niobate Crystals
Autor:
Maxim A. Smirnov, M. N. Palatnikov, Natalya A. Teplyakova, Alexander Vjacheslavovich Syuy, N. V. Sidorov
Publikováno v:
Solid State Phenomena. 312:121-127
The photoluminescence intensity in lithium niobate crystals close to the stoichiometric composition is lower than in a congruent crystal was established. An increase in the Li / Nb ratio leads to a shift in the photoluminescence bands to the short-wa
Publikováno v:
Optics and Spectroscopy. 128:1131-1137
The concentration of OH impurity groups, the Li/Nb ratio, the concentration of Nb $$_{{{\text{Li}}}}^{{4 + }}$$ and V $$_{{{\text{Li}}}}^{ - }$$ point defects in stoichiometric and congruent LiNbO3 crystals, as well as in crystals doped with magnesiu