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Proceedings Paper

Dynamics of n-p-(ethoxybenzylidene) p'-propylaniline (EBPA) in solid phases
Author(s): Andrzej Bak; Antoni Kocot; Maria Massalska-Arodz
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Paper Abstract

In both solid phases of EBPA the dielectric relaxation phenomenon has been observed in the frequency range from 1 Hz to 10 MHz. The process observed in a metastable phase K1 is stronger than this observed in a stable phase K2. Analysis of the temperature dependence of complex dielectric permittivity points to a non-Debye relaxation in each solid phase. THe composition of two Cole-Cole functions has been fitted successfully to the observed results. Each of two molecular motions extracted is of the Arrhenius type. Processes have the same activation energy barriers in a stable phase K2 and in a metastable phase K1.

Paper Details

Date Published: 14 December 1999
PDF: 5 pages
Proc. SPIE 4017, Polymers and Liquid Crystals, (14 December 1999); doi: 10.1117/12.373710
Show Author Affiliations
Andrzej Bak, Technical Univ. of Rzeszow (Poland)
Antoni Kocot, Silesian Univ. (Poland)
Maria Massalska-Arodz, Henryk Niewodniczanski Institute of Nuclear Physics (Poland)


Published in SPIE Proceedings Vol. 4017:
Polymers and Liquid Crystals

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