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  4. Monodomain to polydomain transition in ferroelectric PbTiO<sub>3</sub> thin films with La<sub>0.67</sub>Sr<sub>0.33</sub>MnO<sub>3</sub> electrodes
 
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Monodomain to polydomain transition in ferroelectric PbTiO<sub>3</sub> thin films with La<sub>0.67</sub>Sr<sub>0.33</sub>MnO<sub>3</sub> electrodes

Auteur(s)
Lichtensteiger, Céline
Dawber, Matthew
Stucki, Nicolas
Triscone, Jean-Marc
Hoffman, Jason
Yau, Jeng-Bang
Ahn, Charles H.
Despont, Laurent
Aebi, Philipp
Date de parution
2007
In
Applied Physics Letters, American Institute of Physics (AIP), 2007/90/052907/1-3
Résumé
Finite size effects in ferroelectric thin films have been probed in a series of epitaxial perovskite c-axis oriented PbTiO<sub>3</sub> films grown on thin La<sub>0.67</sub>Sr<sub>0.33</sub>MnO<sub>3</sub> epitaxial electrodes. The film thickness ranges from 480 down to 28 Å (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.
Identifiants
https://libra.unine.ch/handle/123456789/17067
_
10.1063/1.2433757
Type de publication
journal article
Dossier(s) à télécharger
 main article: Lichtensteiger_C_line_-_Monodomain_to_polydomain_transition_20080312.pdf (413.14 KB)
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