Modified four-sublattice model for Rochelle salt by taking into account piezoelectric interactions with shear strain ε₄, ε₅ and ε₆ is proposed. Components of polarization vector and static dielectric permittivity tensor for ...

The research of thermodynamic properties of partially deuterated K(H₁₋xDx)₂PO₄ crystals was performed within the framework of proton ordering model with tunnelling within the four-particle cluster approximation for short-range ...

Within the proton ordering model with taking into account the short-range and long-range interactions as well as tunnelling effects, in the framework of the cluster approximation, we study the thermodynamic and static ...

Within the framework of the proposed uni ed proton ordering model for the ferroelectric compounds of the KH₂PO₄ family, in the four-particle cluster approximation for the short-range interactions and mean eld approximation for ...

Kinetic equations for the dielectric properties of CsH₂PO₄ type ferroelectrics are derived within the nonequilibrium statistical operator method proposed by D.N.Zubarev. These equations are solved with two different ...