Zobrazeno 1 - 10
of 62
pro vyhledávání: '"Sergey N. Ushakov"'
Autor:
Sergey N. Ushakov, Maria A. Uslamina, Aleksandr A. Pynenkov, Vladimir P. Mishkin, Konstantin N. Nishchev, Sergey V. Kuznetsov, Elena V. Chernova, Pavel P. Fedorov
Publikováno v:
Конденсированные среды и межфазные границы, Vol 23, Iss 1, Pp 101-107 (2021)
Using the Bridgman-Stockbarger method, crystals of triple fluoride CaF2-SrF2-BaF2 were grown in a composition range similar to that of CaSrBaF6. The crystals were 10-12 mm in diameter and 50–60 mm in length. The CaSrBaF6 crystal is a new optical ma
Externí odkaz:
https://doaj.org/article/47cec07affea45a4bb0429faaa9d9fa8
Autor:
Mikhail A. Borik, Vladimir T. Bublik, Mariya Yu. Vilkova, Alexey V. Kulebyakin, Elena E. Lomonova, Philipp O. Milovich, Valentina A. Myzina, Polina A. Ryabockina, Nataliya Yu. Tabachkova, Sergey N. Ushakov
Publikováno v:
Modern Electronic Materials, Vol 1, Iss 1, Pp 26-31 (2015)
The structure of PSZ crystals has been studied as a function of the content of the stabilizing impurity (Y2O3) by X-ray diffraction, transmission electron microscopy (TEM) and atomic-force microscope (AFM). The hardness and fracture toughness have be
Externí odkaz:
https://doaj.org/article/6e9e4108dcbc459ab93a83bedb8b6c78
Autor:
Sergey V. Kuznetsov, Sergey N. Ushakov, K. N. Nishchev, Pavel P. Fedorov, V. V. Osiko, M. A. Uslamina
Publikováno v:
Optics and Spectroscopy. 128:600-604
A concentration series of Ca(1 − X)SrXF2:4 mol % YbF3 crystals with Х varying from 0 to 1 has been grown. The absorption spectra of Yb3+ ions in these crystals are measured at temperatures of 300 and 77 K. It is shown that the intensity ratio of t
Publikováno v:
Vestnik of Nosov Magnitogorsk State Technical University. 17:17-23
Publikováno v:
Journal of Luminescence. 167:120-125
The mechanisms of upconversion luminescence of CaF2:Ho crystals and ceramics from 5F3, 5S2(5F4), 5F5 and 5I6 levels upon excitation of 5I7 level of Ho3+ ions were investigated. Different mechanisms are responsible for the populating and depletion of
Autor:
Mariya Yu. Vilkova, Valentina A. Myzina, Polina A. Ryabockina, Sergey N. Ushakov, Elena E. Lomonova, Nataliya Yu. Tabachkova, Vladimir T. Bublik, Philipp O. Milovich, Mikhail A. Borik, Alexey V. Kulebyakin
Publikováno v:
Modern Electronic Materials, Vol 1, Iss 1, Pp 26-31 (2015)
The structure of PSZ crystals has been studied as a function of the content of the stabilizing impurity (Y 2 O 3 ) by X-ray diffraction, transmission electron microscopy (TEM) and atomic-force microscope (AFM). The hardness and fracture toughness hav
Autor:
T. V. Volkova, Elena E. Lomonova, Alexey V. Kulebyakin, Filipp Milovich, Polina A. Ryabochkina, Mikhail A. Borik, Valentina A. Myzina, M. A. Uslamina, Vyacheslav V Osiko, Nataliya Yu. Tabachkova, Sergey N. Ushakov, A. N. Chabushkin
Publikováno v:
Journal of Alloys and Compounds. 621:295-300
The structure and luminescent characteristics of partially yttria-stabilized zirconia (PSZ) doped with Nd 3+ ions were investigated. Transmission electron microscopy (TEM) data for PSZ crystals containing 2.8 mol.% and 3.7 mol.% Y 2 O 3 doped with Nd
Publikováno v:
Quantum Electronics. 44:602-605
The anti-Stokes luminescence spectra of Ho:CaF2 crystals corresponding to the 5G4 → 5I8, 5G5 → 5I8, 5F3 → 5I8, 5F4(5S2) → 5I8, 5F5 → 5I8, 5S2 → 5I7, 5I4 → 5I8, 5I5 → 5I8, 5F5 → 5I7, 5F3 → 5I6, 5I6 → 5I8, 5F5 → 5I6, and 5I5 →
Autor:
A. A. Lyapin, Pavel P. Fedorov, V. V. Osiko, A. V. Malov, Polina A. Ryabochkina, E. A. Garibin, Sergey N. Ushakov
Publikováno v:
Optical Materials. 35:1859-1864
The laser quality transparent СаF2:Tm fluoride ceramics has been prepared by hot forming. Comparative study of absorption and emission spectra of СаF2:Tm (4 mol.% TmF3) ceramic and single crystal samples demonstrated that these materials possess
Autor:
Kirill A. Subbotin, Denis A. Lis, Svetlana A. Antoshkina, Sergey N. Ushakov, Sergei A. Klimin, Evgeny V Zharikov, Polina A. Ryabochkina
Publikováno v:
Journal of Luminescence. 138:32-38
The absorption spectra of Nd3+ ions in NaLa0.5Gd0.5(WO4)2:Nd single crystals were registered in the temperature range 4.5–300 K. The crystal-field energy level scheme for the IR and visible multiplets was derived. The intensity parameters Ωt (t=2,