Polarity of translation boundaries in antiferroelectric PbZrO3
by Xian-Kui Wei, Chun-Lin Jia, Krystian Roleder, and Nava Setter
The polarity of translation boundaries (TBs) in antiferroelectric PbZrO3 has been investigated. Researchers from the EPF Lausanne and the Ernst Ruska-Centre show that previous experimentally reported polar property of RIII-1 type TB can be well approximated by a strainfree rigid model. Based on this, the modelling investigation suggests that there are two additional polar TBs, three antipolar-like TBs and one antipolar antiphase boundary. A high-resolution scanning transmission electron microscopy study reveals that the straight RIII-1 type TB can split into “subdomains” with possible polarisation reversal, suggesting the occurrence of ferroic orders at the TBs. In addition, the dependence of morphology and density of the TBs on thermal treatments is discussed according to the experimentally revealed results.
Xian-Kui Wei, Chun-Lin Jia, Krystian Roleder, and Nava Setter: Polarity of translation boundaries in antiferroelectric PbZrO3, Materials Research Bulletin 62 (2015) 101105.