Zobrazeno 1 - 10
of 81
pro vyhledávání: '"Yu. K. Voron'ko"'
Publikováno v:
Physics of the Solid State. 57:1424-1430
Detailed studies of the polarized Raman spectra of lutetium pyrosilicate single crystals have been performed in a wide temperature range from 20 to 1500 K. This has made it possible for the first time to identify the entire set and symmetry of the in
Publikováno v:
Inorganic Materials. 50:844-849
Raman scattering spectroscopy has been used to study the melting behavior and structure of Mo-O complexes alkali-metal molybdates rich in MoO3: Li4Mo5O17, K2Mo3O10, and M2Mo4O13 (M = Li, Na, K). The complex structure of the anion motif in these molyb
Publikováno v:
Inorganic Materials. 50:837-843
Structural transformations of alkali-metal (Li, K, and Na) mono- and dimolybdates and tungstates have been studied by Raman scattering spectroscopy from room temperature to above their melting point. The structure of the Mo-O and W-O complexes in the
Publikováno v:
Optics and Spectroscopy. 115:863-869
The Raman-scattering spectra of LiB3O5 single crystals at 300 and 20 K have been investigated in detail. The LO- and TO-phonon lines of different symmetries are separated and identified. The reasons for the change in the Raman spectra of LiB3O5 upon
Publikováno v:
Inorganic Materials. 49:923-929
The incongruent melting of LiB3O5 (LBO) single crystals and transformations of the boron-oxygen groups in glasses and melts with the compositions Li2O · 2B2O3 and Li2O · 3B2O3 have been studied by Raman spectroscopy. The vapor over superheated melt
Autor:
S. A. Kutovoi, Alexander I. Zagumennyi, Alexander A. Sobol, Yu. D. Zavartsev, Yu. K. Voron'ko, V. E. Shukshin
Publikováno v:
Physics of the Solid State. 54:1635-1642
The vibrational spectra of single crystals of the LiGd9(SiO4)6O2 and Ca2Gd8(SiO4)6O2 oxyapatites have been studied using Raman spectroscopy at room and high temperatures. The spectra of internal and external vibrations in these structures have been r
Publikováno v:
Inorganic Materials. 48:732-737
The structure of boron-oxygen groups in the Li2O · B2O3, Na2O · B2O3, Cs2O · B2O3, and BaO · B2O3 metaborates in different states of aggregation has been studied by conventional and high-temperature Raman spectroscopy. The structural changes that
Autor:
Yu. K. Voron'ko, O. B. Petrova, A. V. Popov, M.G. Komova, V B Loshchenov, V. A. Krut’ko, Anastasiya V. Ryabova
Publikováno v:
Quantum Electronics. 40:1094-1097
Nanoparticles of gadolinium borate polycrystals and borate glasses, activated by Nd3+ ions, are obtained from macroscopic samples of the corresponding compositions by mechanical grinding and ultrasonic dispersion in water. A spectroscopic study of th
Autor:
Yu. K. Voron'ko, L. V. Moiseeva, V. A. Fedorov, O. B. Petrova, Andrey Popov, L. N. Dmitruk, M. N. Brekhovskikh
Publikováno v:
Inorganic Materials. 46:1391-1395
We have studied synthesis, glass formation, and crystallization processes in the oxychloride barium borate system BaO-B2O3-BaCl2 and determined the highest chlorine concentrations at which glasses can be prepared by mold casting for Ba: 2B ratios in
Publikováno v:
Inorganic Materials. 46:900-905
We report the synthesis and spectroscopic characterization of polycrystalline Yb3+-doped (1, 2, and 5 at %) Ln3BWO9 (Ln = Gd and Y) borotungstates as candidate gain media for diode-pumped near-IR and visible solid-state lasers. Unpolarized luminescen