Journal
JOURNAL OF APPLIED PHYSICS
Volume 88, Issue 11, Pages 6696-6707Publisher
AMER INST PHYSICS
DOI: 10.1063/1.1325001
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A new concept of polarization reversal and domain dynamics in modified ferroelectrics is presented. Accordingly, clusters with a reversed polarization within ferroelectric domains are nucleated under applied field in the vicinity of random fields around quenched defects. The random fields significantly lower the activation barrier required for nucleation, thus controlling the kinetics of polarization reversal and domain dynamics. In this model, polarization switching occurs by the breakdown of ferroelectric long-range order, through a polar cluster state. (C) 2001 American Institute of Physics. [S0021-8979(01)00601-6].
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