Jpn. J. Appl. Phys. 11 (1972) pp. 36-40  |Next Article|  |Table of Contents|
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Piezoelectric Properties in Polarized Poly(vinyl Fluoride)

Eiichi Fukada and Koji Nishiyama

(Received August 9, 1971)

Poly(vinyl fluoride) films were elongated twice the original length by rolling, subjected to a d.c. field of 350 kV/cm at 80°C for 90 minutes, and cooled down to room temperature for 2 hours. The piezoelectric strain-constant d of the electret films was about 1×10^-8 cgs esu at room temperature. The complex piezoelectric, elastic, and dielectric constants showed two dispersions at the low and high temperatures, respectively. The maximum value of piezoelectric loss factor tan δ_d is roughly the same as the sum of the maximum values of elastic and dielectric loss factor tan δ_E and tan δ_ε. This fact may be explained by assuming that the piezoelectric constant h is a real quantity.

URL: http://jjap.jsap.jp/link?JJAP/11/36/
DOI: 10.1143/JJAP.11.36

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