R. Yevych

activity

20182020

collaborators

5 papers

cond-mat.mtrl-sci2020

Quantum paraelectric state and critical behavior in Sn(Pb) $_{2}$ P $_{2}$ S(Se) $_{6}$ ferroelectrics

I. Zamaraite, V. Liubachko, R. Yevych +5

The dipole ordering in Sn(Pb) $_{2}$ P $_{2}$ S(Se) $_{6}$ materials may be tuned by chemical substitution realizing a ferroelectric quantum phase transition and quantum glassy or relaxor typ…

cond-mat.mtrl-sci2019

Phase diagram of ferroelectrics with tricritical and Lifshitz points at coupling between polar and antipolar fluctuations

V. Liubachko, A. Oleaga, A. Salazar +3

Static and dynamic critical behavior of Sn $_{2}$ P $_{2}$ S $_{6}$ type ferroelectrics and (Pb $_{y}$ Sn $_{1 - y}$ ) $_{2}$ P $_{2}$ (Se $_{x}$ S $_{1 - x}$ ) $_{6}$ mixed crystals with line of tricritical points and…

cond-mat.mtrl-sci2018

Description of lattice anharmonicity observed in ferroelectrics with unusual three-well local potential

R. Yevych, Yu. Vysochanskii

For Sn $_{2}$ P $_{2}$ S $_{6}$ family of uniaxial ferroelectrics, the anharmonic quantum oscillators model, based on local three-well potential for spontaneous polarization fluctuations, has…

cond-mat.mtrl-sci2018

Nonlinear dynamics of ferroelectrics with three-well local potential

R. Yevych, M. Medulych, Yu. Vysochanskii

For Sn $_{2}$ P $_{2}$ S $_{6}$ ferroelectrics, the appearance of spontaneous polarization is related to stereoactivity of tin cations and valence fluctuations of phosphorous cations. Here, t…

cond-mat.mtrl-sci2018

Double hysteresis loops in proper uniaxial ferroelectrics

I. Zamaraite, R. Yevych, A. Dziaugys +4

For the first time in a bulk proper uniaxial ferroelectrics, double antiferroelectric-like hysteresis loops have been observed in the case of Sn $_{2}$ P $_{2}$ S $_{6}$ crystal. The quantum…

Quantum paraelectric state and critical behavior in Sn(Pb)2​P2​S(Se)6​ ferroelectrics

Phase diagram of ferroelectrics with tricritical and Lifshitz points at coupling between polar and antipolar fluctuations

Description of lattice anharmonicity observed in ferroelectrics with unusual three-well local potential

Nonlinear dynamics of ferroelectrics with three-well local potential

Double hysteresis loops in proper uniaxial ferroelectrics

Quantum paraelectric state and critical behavior in Sn(Pb) $_{2}$ P $_{2}$ S(Se) $_{6}$ ferroelectrics