Zobrazeno 1 - 10
of 103
pro vyhledávání: '"Yevych, R."'
Publikováno v:
Condensed Matter Physics, 2024, Vol. 27, No. 1, 14701
The appearance of spontaneous polarization in CuInP$_{2}$S$_{6}$ ferrielectrics is related to the second order Jahn-Teller effect for copper cations located in a double-well local potential, the stereoactivity of indium cations located in a three-wel
Externí odkaz:
http://arxiv.org/abs/2403.14857
Autor:
Kohutych, A., Liubachko, V., Hryts, V., Shiposh, Yu., Kundria, M., Medulych, M., Glukhov, K., Yevych, R., Vysochanskii, Yu.
For CuInP$_2$S$_6$ layered ferrielectric crystal, that is most investigated among wide family of van der Waals ferroics MM$'$P$_2$X$_6$ (M - Cu, Ag; M$'$ - In, Bi, Cr, $\dots$; X - S, Se), by Brillouin spectroscopy the temperature dependence of the l
Externí odkaz:
http://arxiv.org/abs/2111.13102
Autor:
Zamaraite, I., Liubachko, V., Yevych, R., Oleaga, A., Salazar, A., Dziaugys, A., Banys, J., Vysochanskii, Yu.
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 type phenomena on different parts of the phase diagram. The introduction
Externí odkaz:
http://arxiv.org/abs/2003.09966
Publikováno v:
Phys. Rev. B 101, 224110 (2020)
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 line of Lifshitz points on the $T-x-y$ phase diagram, which meet at t
Externí odkaz:
http://arxiv.org/abs/1912.13398
Autor:
Yevych, R., Vysochanskii, Yu.
Publikováno v:
Condens. Matter Phys., 2018, vol. 21, No. 3, 33001
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 been used for a description of anharmonic properties, namely thermal
Externí odkaz:
http://arxiv.org/abs/1809.09463
Publikováno v:
Condens. Matter Phys., 2018, vol. 21, No. 2, 23001
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, the continuous phase transition and its behavior under pressure is dete
Externí odkaz:
http://arxiv.org/abs/1806.09923
Autor:
Zamaraite, I., Yevych, R., Dziaugys, A., Molnar, A., Banys, J., Svirskas, S., Vysochanskii, Yu.
Publikováno v:
Phys. Rev. Applied 10, 034017 (2018)
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 anharmonic oscillator model was proposed for description of such polar
Externí odkaz:
http://arxiv.org/abs/1805.08824
Autor:
Yevych, R., Haborets, V., Medulych, M., Molnar, A., Kohutych, A., Dziaugys, A., Banys, Ju., Vysochanskii, Yu.
The valence fluctuations which are related to the charge disproportionation of phosphorous ions $P^{4+} + P^{4+}\rightarrow P^{3+} + P^{5+}$ are the origin of ferroelectric and quantum paraelectric states in Sn(Pb)$_2$P$_2$S$_6$ semiconductors. They
Externí odkaz:
http://arxiv.org/abs/1605.02367
Akademický článek
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Autor:
Rushchanskii, K. Z., Bilanych, R. M., Molnar, A. A., Yevych, R. M., Kohutych, A. A., Perechinskii, S. I., Samulionis, V., Banys, J., Vysochanskii, Yu. M.
For Sn$_2$P$_2$S$_6$ ferroelectrics the second order phase transitions line is observed until reaching the tricritical point at transition temperature lowering to 250 K by compression. Observed temperature-pressure phase diagram agrees with simulated
Externí odkaz:
http://arxiv.org/abs/1411.2147