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

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

2000-05-22

arxiv.org/abs/cond-mat/0005343v1

Phys. Rev. B 62, 1 (2000)

Physics

Condensed Matter

Materials Science

8 pages, 7 figures, Phys. Rev. B (in July 1st)

Scientific paper

10.1103/PhysRevB.62.1

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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