Abstract
Dielectric permittivity studies in the field-cooled mode show a linear dependence of dielectric stiffness (inverse dielectric permittivity) on the dc bias in (1−x)PbMg1∕3Nb2∕3O3−xPbTiO3 crystals. We explain this unusual result in the framework of a theory of transverse, hydrodynamic-type instability of local polarization.
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