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Nontrivial dependence of dielectric stiffness and SHG on dc bias in relaxors and dipole glasses

S. A. Prosandeev·I. P. Raevski·A. S. Emelyanov·Eugene V. Colla·J-L. Dellis·M. El Marssi·S. P. Kapphan·L. Jastrabik
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Abstract

Dielectric permittivity and Second Harmonic Generation (SHG) studies in the field-cooled mode show a linear dependence of dielectric stiffness (inverse dielectric permittivity) on dc bias in PMN-PT crystals and SHG intensity in KTaO$_{3}$:Li at small Li concentrations. We explain this unusual result in the framework of a theory of transverse, hydrodynamic-type, instability of local polarization.

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S. A. Prosandeev, I. P. Raevski, A. S. Emelyanov, Eugene V. Colla, J-L. Dellis, M. El Marssi, S. P. Kapphan, L. Jastrabik. 2004-10-05. Nontrivial dependence of dielectric stiffness and SHG on dc bias in relaxors and dipole glasses. https://doi.org/10.1063/1.1947392

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