Berlin 2024 – scientific programme
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DS: Fachverband Dünne Schichten
DS 20: Poster II
DS 20.29: Poster
Thursday, March 21, 2024, 18:00–20:30, Poster D
time-resolved x-ray diffraction studies on ferroelectric thin film — •rekikua alemayehu1, david pesquera2, matthias rössle3, and matias bargheer1,3 — 1Institute of Physics and Astronomy, University of Potsdam, Potsdam, Germany — 2Catalan Institute of Nanoscience and Nanotechnology, Catalonia, Spain — 3Helmholtz Zentrum Berlin, BESSY II, Berlin, Germany
Polarization switching in ferroelectrics involves the motion of atoms in the crystal structure. Time-resolved x-ray diffraction is a powerful experimental technique to study the structural changes that occur during this process. Here, we show the simultaneous structural and electrical response of a barium titanate epitaxial thin film during and after the application of electric field pulses with amplitudes above and below the coercive field of the ferroelectric film. We will discuss how the transient strain encodes the influence of imprint phenomena on the switching dynamics.
Keywords: time-resolved x-ray diffraction; ferroelectricity; polarization switching