Regensburg 2019 – wissenschaftliches Programm
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KFM: Fachverband Kristalline Festkörper und deren Mikrostruktur
KFM 10: Ferroics - Domains and Domain Walls
KFM 10.1: Vortrag
Dienstag, 2. April 2019, 09:30–09:45, H47
Ferroic transition in single-crystal BaTiO3 — Asaf Hershkovitz1, •Florian Johann2, Maya Barzilay1, Alon Avidor1, and Yachin Ivry1 — 1Department of Materials Science and Engineering, Technion, Israel Institute of Technology, Haifa, Israel — 2Asylum Research, an Oxford Instruments company, Wiesbaden, German
Variable-temperature piezoresponse force microscopy was used to image real-time dynamics of ferroelastic domains during the orthorhombic-tetragonal ferroic phase transition in single-crystal BaTiO3. We demonstrate multiscale stress releasing mechanism at the time space. This mechanism comprises domain wrinkling at the pre-transition state, followed by domain wedging during the transition and ending with domain zipping after the transition, in which striped ferroelastic domains are broadened.