Pyroelectric and Dilatometric Studies on the Low Temperature Ferroelectric Phase Transition of (CH_3NH_3)_5Bi_2Br_{11}

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

Abstracts

EN

The results of the linear thermal expansion studies on (CH_3NH_3)_5Bi_2Br_{11} single crystals in the temperature range 60-340 K are presented. The thermal anomaly in the vicinity of 77 K is assigned to the phase transition classified as close to first order type. The pyroelectric measurements of (CH_3NH_3)_5Bi_2Br_{11} were carried out in the range of 45-320 K along the a- and c-axis. The step-like change in the spontaneous polarization along the a-axis at 77 K indicates a discontinuous character of ferroelectric transition.

Keywords

EN

77.80.Bh

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2005
• Volume: 108
• Issue: 3
• Pages: 505-511

Dates

published

2005-09

received

2005-03-07

Contributors

author

J. Dziedzic

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

author

J. Mróz

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

author

R. Jakubas

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

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Identifiers

DOI

10.12693/APhysPolA.108.505