Search Results - "Yevych, R"

Nonlinear dynamics of ferroelectrics with three-well local potential by Yevych, Medulych, Vysochanskii

“…For Sn2P2S6 ferroelectrics, the appearance of spontaneous polarization is related to stereoactivity of tin cations and valence fluctuations of phosphorous…”
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Phonon spectra and phase transitions in van der Waals ferroics MM'P2X6 by Kohutych, A., Liubachko, V., Hryts, V., Shiposh, Yu, Kundria, M., Medulych, M., Glukhov, K., Yevych, R., Vysochanskii, Yu

“…For CuInP 2 S 6 ferrielectrics by Brillouin spectroscopy, the temperature dependence of the longitudinal hypersound velocity was investigated for the acoustic…”
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Description of lattice anharmonicity observed in ferroelectrics with unusual three-well local potential by Yevych, R, Yu. Vysochanskii

“…For Sn2P2S6 family of uniaxial ferroelectrics, the anharmonic quantum oscillators model, based on local three-well potential for spontaneous polarization…”
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Description of CuInP2S6 ferrielectrics in a mixed Ising model by Yevych, R., Liubachko, V., Hryts, V., Medulych, M., Kohutych, A., Vysochanskii, Yu

“…The appearance of spontaneous polarization in CuInP2S6 ferrielectrics is related to the second order Jahn-Teller effect for copper cations located in a…”
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Sound behavior near the Lifshitz point in proper ferroelectrics by Kohutych, A., Yevych, R., Perechinskii, S., Samulionis, V., Banys, J., Vysochanskii, Yu

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Ferroelectricity in (PbySn1−y)2P2S6 mixed crystals and random field BEG model by Rushchanskii, K. Z., Bilanych, R. M., Molnar, A. A., Yevych, R. M., Kohutych, A. A., Perechinskii, S. I., Samulionis, V., Banys, J., Vysochanskii, Y. M.

“…In Sn2P2S6 ferroelectric under compression, the second‐order phase transition line is observed down to the tricritical point as the transition temperature…”
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Charge Transfer and Anharmonicity in Sn2P2S6 Ferroelectrics by Vysochanskii, Yu, Glukhov, K., Fedyo, K., Yevych, R.

“…The first-principles calculations in LDA approach were performed for Sn 2 P 2 S 6 ferroelectrics. The evolution of energy band structure and charge density…”
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Triple Well Potential and Macroscopic Properties of Sn2P2S6 Ferroelectrics Near Phase Transition by Yevych, R. M., Vysochanskii, Yu. M.

“…A possibility of the existence of triple well potential for an order parameter of the second order phase transition in Sn 2 P 2 S 6 crystals is discussed. The…”
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Rayleigh and Mandelstam–Brillouin Light Scattering in Chalcogenide Glasses of the (Sb2S3)x(GeS2)100–x System by Shpak, I. I., Yevych, R. M., Shpak, A. I., Perechinskiǐ, S. I., Bletskan, D. I., Vysochanskiǐ, Yu. M.

“…Rayleigh and Mandelstam–Brillouin light scattering has been investigated in chalcogenide glasses of the Ge–Sb–S system along the (Sb 2 S 3 ) х (GeS 2 ) 100–х…”
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XPS of Electronic Structure of Ferroelectric Sn2P2S6 Crystals by Grigas, J., Talik, E., Lazauskas, V., Vysochanskii, Yu. M., Yevych, R., Adamiec, M., Nelkinas, V.

“…The electronic structure of the ferroelectric Sn 2 P 2 S 6 single crystal is studied by X-ray photoelectron spectroscopy in both paraelectric and ferroelectric…”
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Hypersound Waves Near the Lifshitz Point in Sn2P2(SexS1-x)6 Ferroelectrics by Kohutych, A. A., Yevych, R. M., Perechinskii, S. I., Vysochanskii, Yu. M.

“…Anisotropy of hypersound velocities at room temperature in Sn 2 P 2 S 6 and Sn 2 P 2 (Se 0.28 S 0.72 ) 6 crystals is investigated by Brillouin scattering…”
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X-ray photoelectron spectroscopy of Sn2P2S6 crystals by J. Grigas, E. Talik, V. Lazauskas, Yu.M. Vysochanskii, R. Yevych, M. Adamiec, V. Nelkinas

“…The paper presents the X-ray photoelectron spectra (XPS) of the valence band (VB) and of the core levels (CL) of uniaxial ferroelectric Sn2P2S6 single crystals…”
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Temperature Investigations of Hypersound Velocities in Sn2P2(SexS1 − x)6 Ferroelectric Mixed Crystals by Yevych, R. M., Perechinskii, S. I., Grabar, A. A., Vysochanskii, Yu. M.

“…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…”
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Phonon spectra and phase transitions in van der Waals ferroics MM’P 2 X 6 by Kohutych, A., Liubachko, V., Hryts, V., Shiposh, Yu, Kundria, M., Medulych, M., Glukhov, K., Yevych, R., Vysochanskii, Yu

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Phonon spectra and phase transitions in CuInP2(SexS1-x)6 ferroelectrics by Vysochanskii, Y, Yevych, R, Beley, L, Stephanovich, V, Mytrovcij, V, Mykajlo, O, Molnar, A, Gurzan, M

“…The investigations of dielectric permittivity, optic birefringence and Raman scattering spectra for CuInP2(SexS1-x)6 mixed crystals give evidence about rapid…”
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Phonon spectra and phase transitions in CuInP2(SexS1-x)6 and Sn2P2(Sexs1-x)6 ferroelectrics by VYSOCHANSKII, Yu, STEPHANOVICH, V, MYTROVCIJ, V, MYKAJLO, O, YEVYCH, R, GURZAN, M

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Ferroelectricity in (Pb y Sn 1−y ) 2 P 2 S 6 mixed crystals and random field BEG model by Rushchanskii, K. Z., Bilanych, R. M., Molnar, A. A., Yevych, R. M., Kohutych, A. A., Perechinskii, S. I., Samulionis, V., Banys, J., Vysochanskii, Y. M.

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Chemical Bonding and Polarons in Sn2P2S(Se)6 Ferroelectrics by Vysochanskii, Yu, Medulych, M., Molnar, A., Glukhov, K., Dziaugys, A., Banys, J., Yevych, R., Maior, M.

“…For ferroelectric-semiconductor Sn 2 P 2 Se 6 the low temperature dielectric relaxation was found to be similar to that observed in Sn 2 P 2 S 6 analog. This…”
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Triple Well Potential and Macroscopic Properties of Sn^sub 2^P^sub 2^S^sub 6^ Ferroelectrics Near Phase Transition by Yevych, R M, Vysochanskii, Yu M

“…A possibility of the existence of triple well potential for an order parameter of the second order phase transition in ... crystals is discussed. The…”
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Triple Well Potential and Macroscopic Properties of Sn 2 P 2 S 6 Ferroelectrics Near Phase Transition by Yevych, R. M., Vysochanskii, Yu. M.

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