Temperature dependence of the aging effect of permittivity in Pb(Zn_1/3Nb_2/3)O₃–PbTiO₃ and BaTiO₃ single crystals

Abstract

The temperature dependence of the aging effect of permittivity in the paraelectric phase of 95.5%Pb(Zn1/3Nb2/3)O3–4.5%PbTiO3 (PZN–4.5%PT) and BaTiO3 (BT) single crystals has been investigated. The time dependence of the real part of permittivity at constant temperatures has been found in the paraelectric phase not only in the relaxor ferroelectric PZN–4.5%PT, but also in the typical oxide ferroelectric BT. Such time dependence of permittivity can be empirically analyzed using the Kohlausch–Williams–Watts (KWW) relaxation function. We discuss the relationship between the aging effect and the relaxation process of the collective motion of polar nanoregions.

Phase Transitions under the Electric Field in Ternary Ferroelectric Solid Solutions of Pb(In1/2Nb1/2)O3–Pb(Mg1/3Nb2/3)O3–PbTiO3 near the Morphotropic Phase Boundary: Electric Approach

“…The nonlinear dielectric susceptibility in PMN-xPT was also found to be well-analyzed within the Landau theory [17]. Recently, we have also found the aging effect on PMN-xPT [18].…”