The poling field and draw dependence of the piezoelectric and pyroelectric response of pressure‐quenched, phase I poly(vinylidene fluoride) films
作者:
J. I. Scheinbeim,
K. T. Chung,
期刊:
Journal of Applied Physics
(AIP Available online 1981)
卷期:
Volume 52,
issue 10
页码: 5983-5987
ISSN:0021-8979
年代: 1981
DOI:10.1063/1.329817
出版商: AIP
数据来源: AIP
摘要:
Recent investigations have shown that unoriented phase I poly(vinylidene fluoride) films can be produced by pressure quenching. The poling field dependence of the pyroelectric coefficientPy, the piezoelectric coefficientsdp,d31ande31, and the dielectric response is investigated for poling fields up toEp= 2.75×106V/cm. These quantities exhibit a plateau region where the initial rapid increase with increasingEpdecreases. This behavior is similar to that observed for unoriented and biaxially oriented phase II poly(vinylidene fluoride) films. The effect of draw ratio ondpandPyfor draw ratios up to 6:1 is also examined.dpincreases from 6.5 to 19 pC/N as the draw ratio goes from 1:1 to 6:1 (at constantEp).Pyincreases from 1×10−9to 5×10−9C/cm2 K.
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