DOI: 10.15330/pcss.16.1.116-122

L. Korotkov¹, D. Likhovaja¹, R. Levitsky², I. Zachek³, A. Vdovych²

Dielectric, Electromechanical and Elastic Properties of K (NH ) H PO Compounds

¹Voronezh State Technical University, Moskovski Pr., 14, 394026, Voronezh, Russia
²Institute for Condensed Matter Physics, 1 Svientsitskii str., 79011 L'viv, Ukraine
³Lviv Polytechnic National University, 12 Bandery str., 79013, L'viv, Ukraine

We describe the available experimental data for the dielectric, piezoelectric, and elastic characteristics of the antiferroelectric crystals, using the proposed microscopic theory. Within the framework of the thermodynamic theory and using the obtained experimental data we calculate the dielectric, piezoelectrlic, and elastic characteristics of the compounds at x< 0.32.
Keywords: ferroelectrics, cluster approximation, dielectric permittivity, piezoelectric coefficients, elastic constant.

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