Abstract
Electromechanical coupling factor is one of the most important parameters for measuring the performance of materials for electromechanical transduction applications. In this paper, we will show that a transverse electromechanical coupling factor k31 of more than 0.45 can be achieved in poly(vinylidene fluoride-trifluoroethylene) [P(VDF-TrFE)] copolymer under certain electron irradiation treatment conditions. In addition, the effective piezoelectric coefficients of the irradiated copolymer have been found to increase markedly in comparison to non-irradiated copolymers. Experimental evidences also indicate that the improved electrostrictive strains in irradiated copolymer films can be maintained over a broad frequency and temperature range.
Original language | English (US) |
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Pages (from-to) | 672-675 |
Number of pages | 4 |
Journal | Japanese Journal of Applied Physics |
Volume | 40 |
Issue number | 2 A |
DOIs | |
State | Published - Feb 2001 |
All Science Journal Classification (ASJC) codes
- General Engineering
- General Physics and Astronomy