Dielectric and Pyroelectric Studies on [N(CH_{3})_{4}]_{3}Bi_{2}X_{9} (X = Cl, Br)

• Authors: R. Jakubas , G. Bator , J. Mróz
• Languages of publication: EN

Abstracts

EN

Dielectric properties of [N(CH_{3})_{4}]_{3}Bi_{2}X_{9} (X = Cl, Br) single crystals were measured in the frequency range 1 kHz - 1 MHz in the vicinity of structural phase transitions of first-order type at 152 K (Cl) and 183 K (Br). The pyroelectric effect was observed in [N(CH_{3})_{4}]_{3}Bi_{2}[N(CH_{3})_{4}]_{3}Bi_{2}Cl_{9} at structural phase transition (T_{c} = 152 K) with the ΔP_{s} of the order of 10^{-5} C m^{-2}. Polarized microscope observations show appearance of ferroelectric domain structure in [N(CH_{3})_{4}]_{3}Bi_{2}Br_{9} within the low temperature phase.

Keywords

EN

77.80.Dj; 77.70.+a; 77.80.Bh

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 1995
• Volume: 87
• Issue: 3
• Pages: 663-669

Dates

published

1995-03

received

1994-09-27

Contributors

author

R. Jakubas

• Institute of Chemistry, University of Wrocław, Joliot-Curie 14, 50-383 Wrocław, Poland

author

G. Bator

• Institute of Chemistry, University of Wrocław, Joliot-Curie 14, 50-383 Wrocław, Poland

author

J. Mróz

• Institute of Physics, Technical University of Wrocław, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland