Comparison of polarization and Born effective charges in alternatively-deflected zigzag and planar-zigzag $beta$-poly(vinylidene fluoride)

Details Comparison of polarization and Born effective charges in alternatively-deflected zigzag and planar-zigzag $beta$-poly(vinylidene fluoride) Comparison of polarization and Born effective charges in alternatively-deflected zigzag and planar-zigzag $beta$-poly(vinylidene fluoride)

2004-11-22

arxiv.org/abs/cond-mat/0411564v1

Physics

Condensed Matter

Materials Science

19 pages, 2 figures, 4 tables

Scientific paper

A density-functional study of the alternatively-deflected zigzag structure for the beta-phase of poly(vinylidene fluoride) or (-CH2-CF2-)n is presented. Structure, polarization and effective charges have been determined. Using lattice constants and atomic positions transformed from experiment, the space group for the alternatively-deflected zigzag structure was found to be Cc2m (C2v 16), in agreement with previous studies. We find a polarization for the alternatively-deflected structure identical to that of the planar-zigzag structure with small changes in the accompanying effective charges.

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