Abstract
The temperature dependence of the aging effect of permittivity in the paraelectric phase of 70.5%Pb(Mg1/3Nb2/3)O3–29.5%PbTiO3 (PMN–29.5%PT) is investigated. Time dependences of permittivity due to the aging effect at constant temperatures without DC biasing field can be empirically analyzed with the Williams–Watts relaxation function. Using the distribution function of relaxation frequency for the Williams–Watts relaxation function, we discuss the temperature dependence of the characteristic time of the aging effect. We clarify that the distribution width of the characteristic time markedly increases with decreasing temperature.
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