Tuning of Polar Domain Boundaries in Non-polar Perovskite.

Domain boundaries in ferroic materials are found to have various physical properties not presenting in the surrounding domains. Such differences can be enhanced and bring promising functionalities when centrosymmetric non-polar materials encounter polar domain boundaries. Here, a tunable polar domain boundary is discovered in an antiferroelectric single crystal. Under a small stress or electric field, the density, volume, and polarity of the boundaries are successfully controlled. This article is protected by copyright. All rights reserved.