Title :
Effect of polarization distribution during heat flux modulation on the pyroelectric current frequency dependence
Author :
Bogomolov, A.A. ; Malyshkina, O.V. ; Timonina, A.Yu.
Author_Institution :
Tver State Univ., Russia
Abstract :
The frequency dependence of the effective pyroelectric current, its real and imaginary components, and the phase shift between pyroelectric current and heat flux have been calculated from the given polarization distribution for the case of sinusoidal heat flux modulation. The calculations are compared with experiment for DTGS crystals. It is shown that the existence of a layer with inverse polarization has a considerable effect on the frequency dependence of the pyroelectric current effective value
Keywords :
dielectric polarisation; ferroelectric materials; organic compounds; pyroelectricity; DTGS crystals; effective pyroelectric current; heat flux modulation; imaginary components; inverse polarization; phase shift; polarization distribution; pyroelectric current frequency dependence; real components; sinusoidal heat flux modulation; Crystals; Ferroelectric materials; Frequency dependence; Image reconstruction; Integral equations; Phase modulation; Polarization; Pyroelectricity; Shape; Surface reconstruction;
Conference_Titel :
Applications of Ferroelectrics, 1998. ISAF 98. Proceedings of the Eleventh IEEE International Symposium on
Conference_Location :
Montreux
Print_ISBN :
0-7803-4959-8
DOI :
10.1109/ISAF.1998.786667
