# Piezoelectric resonance in KAP single crystals

Shankar, MV and Varma, KBR (1996) Piezoelectric resonance in KAP single crystals. In: Ferroelectrics Letters Section, 21 (1-2). pp. 55-59.

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## Abstract

The frequency response of the dielectric constant ($\epsilon$), dielectric loss (tanδ) and impedance (Z) of Potassium acid phthalate (KAP) single crystals, monitored along the polar axis, is characterised by the presence of strong mechanical resonances, in the 50-200 kHz region. The observed resonance behaviour, which is dependent on the geometric size of the sample, is attributed to the piezoelectric nature of the sample. Studies on the effect of variation of temperature and pressure, on the stiffness coefficient (C), indicate that C increases with increasing pressure and decreasing temperature. The electro-mechanical coupling coefficient (k) has been evaluated based on the resonance-antiresonance method and its dependence on temperature and pressure has been studied.

Item Type: Journal Article Publisher Copyright of this article belongs to Taylor and Francis Group. Division of Chemical Sciences > Materials Research Centre 24 Jun 2007 10 Jan 2012 06:49 http://eprints.iisc.ernet.in/id/eprint/10812