Averaging Physical Constants and the Problem of connection between Piezoelectric Properties of Single-Crystal and Ceramic Ferroelectrics

摘要

This paper is devoted to the analysis of different methods for averaging the physical constants of ferroelectric crystals as well as to therncalculation of the piezoelectric coefficients d. . andrntheir anisotropy d_(33)~* /|d_(31)~*| for PbTiO_3 - type ceramicsrnbeing under the polarization electric field.