Preferential Creation of Polar Translational Boundaries by Interface Engineering in Antiferroelectric PbZrO₃ Thin Films

Abstract

Polar translational boundaries (PTBs) are preferentially created in antiferroelectric PbZrO3 films through interfacial engineering. Probe-corrected scanning transmission electron microscopy studies reveal that RIII-1 and RI-1 type PTBs are favorably created in PbZrO3/BaZrO3/SrTiO3 and PbZrO3/SrTiO3 films, respectively. The relationship between interfacial strain and the internal strain of boundaries is the driving force for the selective formation of PTBs.