%0 Journal Article
%T Effects of ac-field amplitude on the dielectric susceptibility of relaxors
%A Zhi-Rong Liu
%A Bing-Lin Gu
%A Xiao-Wen Zhang
%J Physics
%D 2000
%I arXiv
%R 10.1103/PhysRevB.62.1
%X The thermally activated flips of the local spontaneous polarization in relaxors were simulated to investigate the effects of the applied-ac-field amplitude on the dielectric susceptibility. It was observed that the susceptibility increases with increasing the amplitude at low temperatures. At high temperatures, the susceptibility experiences a plateau and then drops. The maximum in the temperature dependence of susceptibility shifts to lower temperatures when the amplitude increases. A similarity was found between the effects of the amplitude and frequency on the susceptibility.
%U http://arxiv.org/abs/cond-mat/0005343v1