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Title

Monodomain to polydomain transition in ferroelectric PbTiO3 thin films with La0.67Sr0.33MnO3 electrodes

Authors
Hoffman, Jason
Yau, Jeng-Bang
Despont, Laurent
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Published in Applied Physics Letters. 2007, vol. 90, no. 5, p. 052907
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 (seven 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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Structures
Research group Groupe Triscone
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LICHTENSTEIGER, Céline et al. Monodomain to polydomain transition in ferroelectric PbTiO3 thin films with La0.67Sr0.33MnO3 electrodes. In: Applied Physics Letters, 2007, vol. 90, n° 5, p. 052907. doi: 10.1063/1.2433757 https://archive-ouverte.unige.ch/unige:23541

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Deposited on : 2012-10-24

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