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Proceedings Paper

Different molecular mechanisms for the dielectric hysteresis and pyroelectricity in a poly(vinyl alcohol) with azobenzene-alkoxy side chains
Author(s): P. Fruebing; M. Wegener; Reimund Gerhard-Multhaupt; A. Buchsteiner; W. Neumann; Ludwig Brehmer
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Paper Abstract

By means of pyroelectrical measurements and dielectric spectroscopy as well as structural information from differential scanning calorimetry, it is shown that, in a poly(vinyl alcohol) with azobenzene-alkoxy side chains, pyroelectricity and dielectric hysteresis which are usually related to each other have different origins. The pyroelectric effect is explained with reversible dipole- density changes upon thermal expansion, whereas the dielectric hysteresis is proposed to result from a charge- carrier polarization.

Paper Details

Date Published: 14 December 1999
PDF: 3 pages
Proc. SPIE 4017, Polymers and Liquid Crystals, (14 December 1999); doi: 10.1117/12.373707
Show Author Affiliations
P. Fruebing, Univ. Potsdam (Germany)
M. Wegener, Univ. Potsdam (Germany)
Reimund Gerhard-Multhaupt, Univ. Potsdam (Germany)
A. Buchsteiner, Univ. Potsdam (Germany)
W. Neumann, Univ. Potsdam (Germany)
Ludwig Brehmer, Univ. Potsdam (Germany)


Published in SPIE Proceedings Vol. 4017:
Polymers and Liquid Crystals
Andrzej Wlochowicz, Editor(s)

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