Symmetry and polarity of antiphase boundaries in PbZrO3

Weak low-temperature polarity in a PbZrO3 single crystal

“…Note, though, that the Ima2 symmetry has been identified in PZ within the polar translational boundaries (TBs) at room temperature [29]. It has to be mentioned that polar translation boundaries have already been reported theoretically [30] and experimentally [31,32]. Cooling the samples under a DC field might lead to the poling of these TBs in the DC field direction and/or their growth.…”

Tuning of Polar Domain Boundaries in Nonpolar Perovskite

“…APBs exist extensively in many AFE perovskites, especially in PbZrO 3 (PZ)-based systems. [12][13][14][15][16] While the AFE bulk regions are nonpolar because of the antiparallel alignments of their dipoles, [17,18] APBs may exhibit polarity, [15,19,20] and polar APBs have been reported to be created via strain engineering of thin films. [21] However, the tuning of polar APBs has not been realized and understood.…”

Translational Antiphase Boundaries in NaNbO3 Antiferroelectrics

“…Antiferroelectric (AFE) perovskite oxides have drawn increasing attention due to their great potential in energy storage and power electronic applications. − Among these, lead-free NaNbO 3 (NN) gained scientific importance due to its complicated phase structures, − irreversible phase transition behavior, − and high energy storage properties. − Systematic studies of atomic structures and defects such as translational APBs ,− in NN are very limited, which have been found to be very important in defining the functional properties in PbZrO 3 . ,, For example, the polar nature and potential applications of translational APBs in PbZrO 3 were demonstrated by experimental observations, followed by theoretical interpretations based on the Landau–Ginzburg theory . In contrast, translational APBs with a straight line morphology found in NN resemble those observed in PbZrO 3 , but their atomic nature and correlation with macroscopic functional properties remain to be better understood.…”