Ferroelectric, pyroelectric and electro-optic properties of a chiral side chain copolymer with high polarization and a broad C∗ phase

B. Helgee Department of Polymer Technology, Chalmers University of Technology, S-412 96, Göteborg, Sweden

T. Hjertberg Department of Polymer Technology, Chalmers University of Technology, S-412 96, Göteborg, Sweden

K. Skarp Department of Physics, Chalmers University of Technology, S-412 96, Göteborg, Sweden

G. Andersson Department of Physics, Chalmers University of Technology, S-412 96, Göteborg, Sweden

F. Gouda Department of Physics, Chalmers University of Technology, S-412 96, Göteborg, Sweden

Abstract

The synthetic route to a chiral side chain copolymer exhibiting broad smectic phases is described. The copolymer shows a smectic C∗ phase from below room temperature up to 105°C. Ferroelectric properties of this copolymer are reported as well as results showing electroclinic switching. The pyroelectric effect and the dielectric behaviour of the copolymer are also demonstrated.

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Ferroelectric, pyroelectric and electro-optic properties of a chiral side chain copolymer with high polarization and a broad C∗ phase

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Ferroelectric, pyroelectric and electro-optic properties of a chiral side chain copolymer with high polarization and a broad C∗ phase

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