Dresden 2009 – wissenschaftliches Programm
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DF: Fachverband Dielektrische Festkörper
DF 12: Poster II
DF 12.3: Poster
Mittwoch, 25. März 2009, 09:30–12:30, P5
Local ferroelectric and magnetic measurements on multiferroic BiCrO3 thin films — •Denny Köhler1, Ulrich Zerweck-Trogisch1, Christian Loppacher3, Stephan Geprägs2, Sebastian T. B. Gönnenwein2, Rudolf Gross2, and Lukas M. Eng1 — 1Institut für Angewandte Photophysik, Technische Universität Dresden, Dresden — 2Walther-Meissner-Institut, Bayerische Akademie der Wissenschaften, München — 3Laboratoire de Matériaux et Microélectronique de Provence, Universités Paul Cézanne, Marsaille
We present low-temperature noncontact-AFM investigations in combination with Kelvin Probe Force Microscopy (KPFM) and Magnetic Force Microscopy (MFM) to study the magnetic properties of BiCrO3 thin films on the nm length scale. In addition, we investigated the ferroelectric properties of BiCrO3 thin films by Piezoresponse Force Microscopy (PFM) and compared them to macroscopic hysteresis measurements. The samples have been prepared as described in [1].
The ferroelectric characteristics were measured both above and below the magnetic and
ferroelectric phase transition temperatures of BiCrO3. We compare the local PFM measurements with the global properties of the BiCrO3 films obtained from polarization versus applied electric field curves both at room and low temperature.
S. Geprägs et al., Phil. Mag. Lett. 87: 141-147 (2007)