Pyroelectric Properties of Grain-Oriented Bismuth Layer-Structured Ferroelectric Ceramics
- 1 January 1983
- journal article
- Published by IOP Publishing in Japanese Journal of Applied Physics
- Vol. 22 (S2) , 53
- https://doi.org/10.7567/jjaps.22s2.53
Abstract
Pyroelectric properties of bismuth layer-structured ferroelectrics (BLSF) were studied on their grain-oriented ceramics prepared by the hot-forging (H.F.) method, as compared with ordinarily fired (O.F.) ones. The pyroelectric coefficient p was automatically measured and three figures of merit were calculated. Pyroelectric measurements using a chopped laser beam light gave the voltage responsivity R v and the detectivity D * as a function of the chopping frequency. Figures of merit of H.F. ceramics are two times as large as those of O.F. ones. The H.F. ceramics have indicated the grain orientation effects on their pyroelectric properties.Keywords
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