Title :
Ultra low-frequency dielectric properties of poly(vinylidene fluoride) in high fields
Author :
Yamada, Tatsuro ; Miyairi, Keiichi ; Mizutan, Teruyosi
Author_Institution :
Nagano Coll. of Technol., Japan
Abstract :
The dielectric properties of poly(vinylidene fluoride) (PVDF) films stressed in a near-breakdown field from 10-1 Hz to 10 -5 Hz have been measured, using a picoammeter connected to a microcomputer. Nonlinear dielectric behavior in PVDF films in the frequency range below 10-2 Hz is observed. The experimental results are compared with the results obtained by Hamon´s method. The nonlinear dielectric behavior is explained in terms of the electrode polarization of ionic carriers. The field cleaning effect was found to play an important role in the ultra-low-frequency range
Keywords :
dielectric losses; dielectric measurement; dielectric properties of solids; dielectric thin films; high field effects; polymer films; 10E-5 to 10E-1 Hz; PVDF films; ULF; dielectric properties; electrically stressed films; electrode polarization; field cleaning effect; high fields; ionic carriers; microcomputer; near-breakdown field; nonlinear dielectric behavior; picoammeter; poly(vinylidene fluoride); ultra-low-frequency range; Ammeters; Dielectric losses; Dielectric measurements; Electrodes; Frequency; Microcomputers; Stress measurement; Vacuum systems; Vacuum technology; Voltage;
Conference_Titel :
Conduction and Breakdown in Solid Dielectrics, 1992., Proceedings of the 4th International Conference on
Conference_Location :
Sestri Levante
Print_ISBN :
0-7803-0129-3
DOI :
10.1109/ICSD.1992.224993
