Inhibition of polydomain formation in PbTiO3/PbZr0.2Ti0.8O3 superlattices by intercalation of ultra-thin SrTiO3 layers - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Applied Physics Année : 2011

Inhibition of polydomain formation in PbTiO3/PbZr0.2Ti0.8O3 superlattices by intercalation of ultra-thin SrTiO3 layers

Résumé

We used pulsed laser deposition to grow a series of PbTiO3/PbZr0.2Ti0.8O3 superlattices on SrTiO3 and SrRuO3/SrTiO3 substrates. An a/c polydomain structure was evidenced by reciprocal space mapping and by transmission electron microscopy. Insertion of ultra-thin layers of SrTiO3 at the interfaces between PbTiO3 and PbZr0.2Ti0.8O3 layers has inhibited this polydomain formation. A strong decrease in the tetragonality indicates clearly that the polarization state in these superlattices has changed due to the insertion of the SrTiO3 layers. A purely elastic mechanism does not seem to explain the determined structural parameters
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Dates et versions

hal-00687627 , version 1 (13-04-2012)

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C. Hubault, C. Davoisne, L. Dupont, A. Perrin, Alexandre Boulle, et al.. Inhibition of polydomain formation in PbTiO3/PbZr0.2Ti0.8O3 superlattices by intercalation of ultra-thin SrTiO3 layers. Applied Physics, 2011, 99 (5), pp.052905-1-052905-3. ⟨10.1063/1.3619843⟩. ⟨hal-00687627⟩
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