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In this work, we present a result of PFM measurements on perforated and nonperforated Ba 0,8 Sr 0,2 TiO 3  thin epitaxial films. A huge enhancement of effective values for both lateral and vertical piezoelectric tensors during polarization reversal was experimentally detected. An assumption of short-range quadrant domain pattern in perforated ferroelectric structure was discussed. The obtained results are crucial for calculations of ferroelectric polarization in ferroelectric photonic crystals and metamaterials.

Piezoelectric properties enhancement of perforated ferroelectric thin films during in-plane polarization reversal