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Effects of ac-field amplitude on the dielectric susceptibility of relaxors

Zhi-Rong Liu·Bing-Lin Gu·Xiao-Wen Zhang
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Abstract

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.

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Zhi-Rong Liu, Bing-Lin Gu, Xiao-Wen Zhang. 2000-05-22. Effects of ac-field amplitude on the dielectric susceptibility of relaxors. https://doi.org/10.1103/physrevb.62.1

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