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525 A.C. POLING OF SOLUTION CAST FILMS OF POLWINYLEDENE FLUORIDE/LEAD ZIRCONATE COMPOSITES Dolly Sinha and P. K. C. Pillai Indian Institute of Technology, New Delhi, India. ABSTRACT -- Composite samples were prepared in the form of thin films (50-80pm) by solution cast techniques for different weight fractions of FTT in P M F matrix. Samples were a.c. poled at a temperature of -180OC. The a. c. poling at elevated temperature considerably enhances the dielectric constant and is found to be a more efficient way of poling composite films than conventional d.c. poling. SEM and XRD studies were done to correlate the increment in dielectric constant with structural modification.

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Page 1: [IEEE 6th International Symposium on Electrets,(ISE 6) Proceedings. - Oxford, UK (1-3 Sept. 1988)] 6th International Symposium on Electrets,(ISE 6) Proceedings. - AC poling of solution

525

A.C. POLING OF SOLUTION CAST FILMS OF POLWINYLEDENE FLUORIDE/LEAD

ZIRCONATE COMPOSITES

Dolly Sinha and P. K. C. Pillai

Indian Institute of Technology, New Delhi, India.

ABSTRACT --

Composite samples were prepared in the form of thin films (50-80pm) by solution cast techniques for different weight fractions of FTT in P M F matrix. Samples were a.c. poled at a temperature of -180OC. The a. c. poling at elevated temperature considerably enhances the dielectric constant and is found to be a more efficient way of poling composite films than conventional d.c. poling. SEM and XRD studies were done to correlate the increment in dielectric constant with structural modification.

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