Previous studies have indicated that the pyroelectric effect does not fully account for the complete measured pyroelectric charge in thin films of polyvinylidene fluoride due to thermal diffusion. Incorporation of the electrocaloric effect as a feedback mechanism to the pyroelectric effect, provides a realistic model for the overall pyroelectric charge. By thermally loading the pyroelectric material itself, experimental frequency response variations in the electrocaloric effect arc observed. Experimental thermal noise measurements provide additional tentative speculation of the electrocaloric effect.
Ferroelectrics
Volume 141, 1993 - Issue 1
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