Stretched exponential relaxation in perovskite ferroelectrics after cyclic loading

Lupascu, Doru C.; Fedosov, Sergei; Verdier, Cyril; Rödel, Jürgen; Seggern, Heinz Von
February 2004
Journal of Applied Physics;2/1/2004, Vol. 95 Issue 3, p1386
Academic Journal
The switching kinetics in fatigued polycrystalline bulk ferroelectrics do not exhibit relaxation with a singular time constant but rather stretched exponential behavior. Several microscopic mechanisms are discussed to explain this effect for a polycrystalline material. Some of the mechanisms may apply equally well to thin films, others are characteristic of a macroscopic sample or a thick film. © 2004 American Institute of Physics.


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