Non-linear dielectric properties in paraelectric phase of γ-damaged TGS crystal

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Abstract
The non-linear dielectric properties in the paraelectric phase of γ-irradiated TGS crystal are studied. The temperature dependence of non-linearity coefficient B is found. It is claimed that the non-linearity depends on orientation of effective field with regard to bias field. It is also shown that the time dependence of ε at dc field as well as the observed hysteresis of ε(E) dependence can be explained assuming existence of the bias soft component.