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Proceedings Paper

Raman study of the ferroelectric phase transition in GPI single crystals
Author(s): Tomasz Runka; Marek Kozielski; Miroslaw Drozdowski; L. Szczepanska
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Paper Abstract

The Raman spectra of Gly(DOT)H3PO3 were investigated over the internal frequency range 400 - 3200 cm-1. The measurements have been performed in the temperature range 175 - 250 K covering paraelectric-ferroelectric P21/a-P21 phase transition. The Raman study revealed the dynamical disorder of protons which is coupled to the motions of glycinium cations. Two types of glycinium cations were observed in the ferroelectric phase instead of one in paraelectric phase. The obtained results confirm the order- disorder nature of a proper ferroelectric phase transition of second order.

Paper Details

Date Published: 24 March 1999
PDF: 4 pages
Proc. SPIE 3724, International Conference on Solid State Crystals '98: Single Crystal Growth, Characterization, and Applications, (24 March 1999); doi: 10.1117/12.343011
Show Author Affiliations
Tomasz Runka, Poznan Univ. of Technology (Poland)
Marek Kozielski, Poznan Univ. of Technology (Poland)
Miroslaw Drozdowski, Poznan Univ. of Technology (Poland)
L. Szczepanska, Institute of Molecular Physics (Poland)


Published in SPIE Proceedings Vol. 3724:
International Conference on Solid State Crystals '98: Single Crystal Growth, Characterization, and Applications
Andrzej Majchrowski; Jerzy Zielinski, Editor(s)

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