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Title: Effect of dielectric relaxation on the performance of P(VDF-TrFE) copolymer ultrasonic transducers
Authors: Kwok, KW 
Chan, HLW 
Choy, CL
Keywords: Copolymers
Dielectric relaxation
Issue Date: 1998
Publisher: IEEE
Source: ISAF 1998 : proceedings of the eleventh IEEE International Symposium on Applications of Ferroelectrics, Montreux, Switzerland, August 24-27, 1998, p. 243-246 How to cite?
Abstract: The complex dielectric permittivity of vinylidene fluoride-trifluoroethylene copolymer with 20 mol% of TrFE [P(VDF-TrFE) 80/20] has been measured over the frequency range of 500 kHz to 20 MHz at temperatures varying from 20° to 100 °C. This copolymer has the highest electromechanical coupling coefficient k[sub t] among all TrFE compositions and has thus attracted considerable interest in ultrasonic transducer applications. The effect of dielectric relaxation on the performance of VDF-TrFE transducers is discussed.
ISBN: 0-7803-4959-8
Rights: © 1998 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
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