Raman study of the ferroelectric phase transition in GPI single crystals

Tomasz Runka; Marek Kozielski; Miroslaw Drozdowski; L. Szczepanska

doi:10.1117/12.343011

24 March 1999 Raman study of the ferroelectric phase transition in GPI single crystals

Tomasz Runka, Marek Kozielski, Miroslaw Drozdowski, L. Szczepanska

Proceedings Volume 3724, International Conference on Solid State Crystals '98: Single Crystal Growth, Characterization, and Applications; (1999) https://doi.org/10.1117/12.343011
Event: International Conference on Solid State Crystals '98, 1998, Zakopane, Poland

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.

Citation Download Citation

Tomasz Runka, Marek Kozielski, Miroslaw Drozdowski, and L. Szczepanska "Raman study of the ferroelectric phase transition in GPI single crystals", Proc. SPIE 3724, International Conference on Solid State Crystals '98: Single Crystal Growth, Characterization, and Applications, (24 March 1999); https://doi.org/10.1117/12.343011

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