Dresden 2017 – wissenschaftliches Programm
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DF: Fachverband Dielektrische Festkörper
DF 11: Ferroics - Domains, Domain Walls and Skyrmions II
DF 11.7: Vortrag
Mittwoch, 22. März 2017, 11:30–11:45, WIL B321
Analysing the orientation distribution function of ferroelectric domains using vector piezoresponse force microscopy — •Markus Kratzer1, Michael Lasnik1,2, Felice Bombieri1,2, Sören Röhrig2, Marco Deluca2, and Christian Teichert1 — 1Institute of Physics, Montanuniversität Leoben, Aiustria — 2Materials Center Leoben Forschung GmbH, Austria
An important figure of merit for analyzing and improving the behavior of commercial piezoelectric actuators is the orientation distribution function (ODF) of the domains in ferroelectric ceramics. A common method to visualize piezoelectric domain orientations is Piezoresponse Force Microscopy (PFM). In principle, a three-dimensional reconstruction of the domain polarization can be obtained by measuring the out-of-plane and in-plane components of the domains (Vector PFM). On the basis of the material's piezoelectric tensor and multiple measurements on one sample, the vertical (1D) and lateral (2D) orientations of the domains are obtained, and the ODF can be reconstructed. Utilizing Vector PFM we investigated differently polarized lead zirconate titanate ceramics and commercial piezoceramic actuators. A newly developed data treatment algorithm allowed fast and reliable reconstruction of the domain ODF from three-dimensional Vector PFM data.