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Critical Slowing Down in Ferroelectric Pyridinium Tetrafluoroborate
Author(s) -
Czarnecki P.,
Szafraniak I.
Publication year - 1998
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/(sici)1521-3951(199809)209:1<211::aid-pssb211>3.0.co;2-f
Subject(s) - tetrafluoroborate , pyridinium , ferroelectricity , materials science , chemistry , optoelectronics , ionic liquid , medicinal chemistry , organic chemistry , dielectric , catalysis
Abstract Complex permittivity of a ferroelectric single crystal of PyBF 4 was measured in the frequency range from 1 kHz to 13 MHz. In the vicinity of ferroelectric phase transition, the phenomenon of critical slowing down was detected. The dielectric relaxation in that crystal can be described by the Debye relaxation equation with a single relaxation time. The results suggest the order–disorder nature of the continuous ferroelectric phase transition.