Kinetics of nanodomain growth in ferroelectric artificial superlattices

We report the kinetics of nanoscale domain growth in ferroelectric PbZrO3/PbTiO3 artificial superlattices. Ferroelectric superlattices behave as single ferroelectric materials with only 180° domain structure (monodomain). Domain size increases linearly with the pulse voltage, and is linearly dependent on the logarithmic value of the pulse duration. It was found that ferroelectric superlattices have a relatively high activation field for domain growth and enhanced domain stability, resulting in a long-term retention behavior of more than one month.