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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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