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DS: Fachverband Dünne Schichten

DS 20: Poster II

DS 20.29: Poster

Donnerstag, 21. März 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 bargheer^1,3 — 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