Features of the low-frequency polarization response in the region of the ferroelectric phase transition in multiferroic TbMnO.sub.3./sub.

0486091 - FZÚ 2018 RIV RU eng J - Článek v odborném periodiku
Trepakov, Vladimír - Kvyatkovskii, O.E. - Savinov, Maxim - Dejneka, Alexandr - Wang, X. - Cheong, S.W.
Features of the low-frequency polarization response in the region of the ferroelectric phase transition in multiferroic TbMnO₃.
Physics of the Solid State. Roč. 58, č. 10 (2016), s. 2021-2026. ISSN 1063-7834. E-ISSN 1090-6460
Institucionální podpora: RVO:68378271
Klíčová slova: low-frequency * polarization response * ferroelectric, phase * transition * multiferroic * TbMnO₃
Obor OECD: Condensed matter physics (including formerly solid state physics, supercond.)
Impakt faktor: 0.860, rok: 2016

The unusual behavior of the low-frequency (10 Hz-1 MHz) permittivity in single crystals of ferroelectric multiferroic TbMnO3 has been experimentally and theoretically studied in detail in the region of the narrow temperature peak of the permittivity, associated with the ferroelectric phase transition (T (C) similar to 27.4 K). It has been found that the epsilon (c) (') (omega, T) maximum sharply decreases with increasing measured field frequency, while the temperature position of the maximum is independent of frequency. It has been shown that the observed features of the polarization response can be satisfactorily described within the Landau-Khalatnikov polarization relaxation theory.
Trvalý link: http://hdl.handle.net/11104/0280973