Zobrazeno 1 - 10
of 171
pro vyhledávání: '"A.I. Ryskin"'
Publikováno v:
Physica B: Condensed Matter. :282-285
Equilibrium statistical and nonequilibrium photo-induced distributions of electrons over the levels of CdF2:DX were studied as function of the temperature. Optical, conductivity, as well as 113Cd and 19F nuclear spin-lattice relaxation data were take
Publikováno v:
Physica B: Condensed Matter. :1038-1041
CdF 2 is the only highly ionic dielectric crystal, which can be converted into n-type semiconductor via doping with column-III elements and annealing in the reduction atmosphere. Among donor impurities, Ga and In dopants form DX centers with the shal
Publikováno v:
Physica B: Condensed Matter. :852-855
We report nuclear magnetic resonance (NMR) measurements with in situ optical excitation of metastable defects in CdTe : In, CdTe : Ga, and CdF2 : In. 113 Cd nuclear spin–lattice relaxation rates (1/T1) in CdTe : In are about two orders of magnitude
Publikováno v:
Physics Reports. 248:369-404
The role of the multi-mode vibrational spectrum of crystals with structural defects in optical phenomena such as intracenter absorption and luminescence, internal photoeffect, and resonant Raman scattering is examined. A comparison is performed betwe
Autor:
A. S. Voloshinovskii, A.S. Sheulin, N.E. Korolev, A.I. Ryskin, Piotr A. Rodnyi, V.V. Yanovskii
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 333:425-428
The scintillation characteristics of undoped CeF3, low-doped CeF3 (0.7 mol% of Sr), and mixed Ce0.9Sr0.1F2.9 crystals with tisonite structure such as the absorption and luminescence spectra, decay constant and light yield are determined. The Sr-doped
Publikováno v:
Physica B: Condensed Matter. :1020-1022
113 Cd nuclear spin-lattice relaxation measurements have been carried out over the temperature range 200–500 K on semiconducting crystals of CdF 2 : Ga and co-doped CdF 2 : Ga,Y. The relaxation rates 1/ T 1 in both crystals are found to be enhanced
Publikováno v:
Physica B: Condensed Matter. :1035-1037
CdF2 crystals doped with Ga or In are the most promising representative of new class of holographic materials, in which a photo-induced change in the density of bistable (DX center) states in a semiconductor crystal produces a local change of its ref
Autor:
A.I. Ryskin, Y. Uesu
Publikováno v:
Photorefractive Effects, Materials, and Devices.
Two-wave and four-wave mixing experiments are performed on semiconductor with DX centers, CdF2:Ga,Y. The crystal is known to exhibit strong modification of optical constants when exposed to light as a result of optically induced transformation of DX-
Publikováno v:
Optics in Computing.
Over the past several years a new class of holographic materials, based on the bistability of a type of crystal defect known at the DX center, has been explored from both a fundamental physics and an applications perspective [1-4].
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