Piezoelectric resonance in KAP single crystals

Autor:	K. B.R. Varma, M. V. Shankar
Rok vydání:	1996
Předmět:	Frequency response Materials science Nuclear magnetic resonance Analytical chemistry Polar Resonance Dielectric loss Dielectric Condensed Matter Physics Electrical impedance Piezoelectricity Coupling coefficient of resonators Electronic Optical and Magnetic Materials
Zdroj:	Ferroelectrics Letters Section. 21:55-59
ISSN:	1563-5228 0731-5171
Popis:	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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::0708f30070715aa04d654e87225c33da https://doi.org/10.1080/07315179608204744 Zobrazit plný text záznamu