Longitudinal Dielectric, Piezoelectric, Elastic and Thermal Properties of CsH2AsO4 Type Ferroelectrics
Journal Title: Фізика і хімія твердого тіла - Year 2014, Vol 15, Issue 4
Abstract
Within the framework of modified model of proton ordering of CsH2AsO4 type ferroelectrics with taking into account linear on strain contribution into the energy of proton system, but without taking into account tunneling within the four particle cluster approximation corresponding thermodynamic potentials are calculated. Using the corresponding equations of state spontaneous polarization are calculated longitudinal dielectric permittivity of a mechanically clamped and mechanically free crystals, their piezoelectric characteristics, elastic constants and molar capacity. At the proper set of parameters good quantitative description of the available experimental data for the CsH2AsO4 type ferroelectrics is obtained.
Authors and Affiliations
I. R. Zachek, R. R. Levitsky, O. B. Bilenka
Keywords
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