Nanoporous Piezo- and Ferroelectric Thin Films - Archive ouverte HAL
Article Dans Une Revue Langmuir Année : 2012

Nanoporous Piezo- and Ferroelectric Thin Films

Résumé

Nanoporous barium titanate and lead titanate thin films (∼100 nm calculated from ellipsometric data) are prepared starting from sol–gel solutions modified with a commercially available block-copolymer and evaporation-induced self-assembly methodology. The tuning of the thermal treatment followed by in situ ellipsometry allows the decomposition of the organic components and of the structuring agent leading to the formation of porous tetragonal crystalline perovskite structures as observed by XRD, HRTEM, SEM, and ellipsoporosimetry. Both nanoporous barium titanate and lead titanate thin films present local piezoelectric and ferroelectric behavior measured by piezoresponse force microscopy (PFM), being promising platforms for the preparation of the generation of new multifunctional systems.

Domaines

Matériaux
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Dates et versions

hal-01468506 , version 1 (15-02-2017)

Identifiants

Citer

Paula Ferreira, Ru Z. Hou, Aiying Wu, Marc-Georg Willinger, Paula M. Vilarinho, et al.. Nanoporous Piezo- and Ferroelectric Thin Films. Langmuir, 2012, 28 (5), pp.2944 - 2949. ⟨10.1021/la204168w⟩. ⟨hal-01468506⟩
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