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Monodomain to polydomain transition in ferroelectric PbTiO3 thin films with La0.67Sr0.3MnO3 electrodes

Celine Lichtensteiger·Matthew Dawber·Nicolas Stucki·Jean-Marc Triscone·Jason Hoffman·Jeng-Bang Yau·Charles H. Ahn·Laurent Despont·Philippe Aebi
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Abstract

Finite size effects in ferroelectric thin films have been probed in a series of epitaxial perovskite c-axis oriented PbTiO3 films grown on thin La0.67Sr0.33MnO3 epitaxial electrodes. The film thickness ranges from 480 down to 28 A (7 unit cells). The evolution of the film tetragonality c/a, studied using high resolution x-ray diffraction measurements, shows first a decrease of c/a with decreasing film thickness followed by a recovery of c/a at small thicknesses. This recovery is accompanied by a change from a monodomain to a polydomain configuration of the polarization, as directly demonstrated by piezoresponse atomic force microscopy measurements.

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Celine Lichtensteiger, Matthew Dawber, Nicolas Stucki, Jean-Marc Triscone, Jason Hoffman, Jeng-Bang Yau, Charles H. Ahn, Laurent Despont, Philippe Aebi. 2006-11-15. Monodomain to polydomain transition in ferroelectric PbTiO3 thin films with La0.67Sr0.3MnO3 electrodes. https://doi.org/10.1063/1.2433757

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