Zobrazeno 1 - 10
of 13
pro vyhledávání: '"S. I. Perechinskii"'
Autor:
S. I. Perechinskii, A. Kohutych, Konstantin Z. Rushchanskii, R. Bilanych, A. A. Molnar, Yulian M. Vysochanskii, R. M. Yevych, Vytautas Samulionis, J. Banys
Publikováno v:
physica status solidi (b). 253:384-391
Autor:
S. I. Perechinskii, I. M. Stoika, A. Kohutych, R. Yevych, Yulian M. Vysochanskii, Rostyslav M. Bilanych
Publikováno v:
Open Physics, Vol 12, Iss 9, Pp 611-614 (2014)
Elastic properties of (PbySn1−y )2P2S6 solid solutions were studied using Brillouin scattering technique. Different scattering geometries were used for sound velocities determination that make it possible to find all components of the stiffness ten
Lattice instability at phase transitions near the Lifshitz point in proper monoclinic ferroelectrics
Publikováno v:
Journal of Physics: Condensed Matter. 18:4047-4064
The temperature dependence of acoustic properties of the Sn(2)P(2)(Se(x)S(1-x))(6) uniaxial ferroelectric in the vicinity of the Lifshitz point (LP) was investigated by Brillouin spectroscopy and analysed in the Landau-Khalatnikov approximation. An a
Autor:
I. I. Shpak, R. M. Evich, Z. P. Gad’mashi, S. I. Perechinskii, Yu. M. Vysochanskii, V. Yu. Slivka
Publikováno v:
Journal of Applied Spectroscopy. 71:902-906
The Rayleigh light scattering in chalcogenide glasslike alloys of the As-S system is investigated. The velocities of longitudinal hypersound, elasto-optical constants, extinction coefficients, and scattering losses have been determined. It is shown t
Autor:
R. M. Evich, I. I. Shpak, V. Yu. Slivka, S. I. Perechinskii, Yu. M. Vysochanskii, Z. P. Gadmashi
Publikováno v:
Optics and Spectroscopy. 97:76-79
The Rayleigh-Brillouin light scattering in chalcogenide glasses of the Ge-Sb-S system in the (Sb2S3)x(GeS2)100−x (x = 0–50) set is investigated. The longitudinal hypersonic velocity, the high-frequency longitudinal elastic modulus, the extinction
Autor:
S. I. Perechinskii, O. A. Mykajlo, O. Molnar, Vladimir A. Stephanovich, M. I. Gurzan, V. Tovt, Yu. M. Vysochanskii, L. Beley
Publikováno v:
Ferroelectrics. 298:361-366
By X-ray diffraction structure determination, together with Raman scattering, optical birefringence and low frequency dielectric measurements, ferrielectric phase transitions in regions of trigonal and monoclinic phases on a temperature-concentration
Temperature Investigations of Hypersound Velocities in Sn2P2(SexS1 − x)6Ferroelectric Mixed Crystals
Publikováno v:
Ferroelectrics. 298:97-101
A temperature dependence of hypersound velocities at transition from a paraelectric phase to ferroelectric one near a Lifshitz point in Sn 2 P 2 (Se 0.28 S 0.72 ) 6 crystals was investigated by Brillouin scattering spectroscopy. Clear anomalies were
Autor:
S. F. Motrja, S. I. Perechinskii, J. Kroupa, Yu. M. Vysochanskii, V. V. Mitrovcij, A. A. Grabar
Publikováno v:
Ferroelectrics. 237:193-200
The temperature dependencies of optical birefringence for nominally pure crystals Sn2P2S6 and these crystals with the impurities of lead or selenium atoms, and solid solutions of Sn2P2(SexS1−x)6 have been investigated. The changes of the anomalies
Autor:
S. I. Perechinskii, Yu. M. Vysochanskii, Z. P. Gadmashi, V. Yu. Slivka, I. I. Shpak, R. M. Evich
Publikováno v:
Glass Physics and Chemistry. 30:14-16
Mandelshtam–Brillouin and Rayleigh scattering in As2S3 and GeS2 chalcogenide glasses is investigated. Longitudinal hypersonic velocities, adiabatic elastooptical constants (p12)ad at frequencies ∼15 GHz, extinction coefficients, and scattering lo
Publikováno v:
physica status solidi (b). 183:97-102
The effect of uniaxial compression on the temperature dependences of birefringence and dielectric constant is studied for the proper uniaxial ferroelectrics Sn2P2S6 and Sn2P2Se6. The influences of compression on the ferroelectric phase transition (PT