Features of the low-frequency polarization response in the region of the ferroelectric phase transition in multiferroic TbMnO3


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Resumo

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 (TC ~ 27.4 K). It has been found that the εc(ω, 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.

Sobre autores

V. Trepakov

Ioffe Physical-Technical Institute; Institute of Physics

Autor responsável pela correspondência
Email: trevl@mail.ioffe.ru
Rússia, Politekhnicheskaya ul. 26, St.Petersburg, 194021; Na Slovance 2, Prague, 18221

O. Kvyatkovskii

Ioffe Physical-Technical Institute

Email: trevl@mail.ioffe.ru
Rússia, Politekhnicheskaya ul. 26, St.Petersburg, 194021

M. Savinov

Institute of Physics

Email: trevl@mail.ioffe.ru
Tchéquia, Na Slovance 2, Prague, 18221

A. Dejneka

Institute of Physics

Email: trevl@mail.ioffe.ru
Tchéquia, Na Slovance 2, Prague, 18221

X. Wang

Rutgers Center for Emergent Materials and Department of Physics and Astronomy

Email: trevl@mail.ioffe.ru
Estados Unidos da América, Piscataway, New Jersey, 08854

S.-W. Cheong

Rutgers Center for Emergent Materials and Department of Physics and Astronomy

Email: trevl@mail.ioffe.ru
Estados Unidos da América, Piscataway, New Jersey, 08854

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