Effect of dielectric relaxation on the performance of P(VDF-TrFE) copolymer ultrasonic transducers

Kin Wing Kwok, H. L.W. Chan, C. L. Choy

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

1 Citation (Scopus)

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 ktamong 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.
Original languageEnglish
Title of host publicationIEEE International Symposium on Applications of Ferroelectrics
PublisherIEEE
Pages243-246
Number of pages4
Publication statusPublished - 1 Dec 1998
EventProceedings of the 1998 11th IEEE International Symposium on Appliations of Ferroelectrics (ISAF-XI) - Montreaux, Switzerland
Duration: 24 Aug 199827 Aug 1998

Conference

ConferenceProceedings of the 1998 11th IEEE International Symposium on Appliations of Ferroelectrics (ISAF-XI)
Country/TerritorySwitzerland
CityMontreaux
Period24/08/9827/08/98

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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