Nanoporous Piezo- and Ferroelectric Thin Films

authors	Ferreira, P; Hou, RZ; Wu, AY; Willinger, MG; Vilarinho, PM; Mosa, J; Laberty-Robert, C; Boissiere, C; Grosso, D; Sanchez, C
nationality	International
journal	LANGMUIR
keywords	CERAMICS; POROSITY
abstract	Nanoporous barium titanate and lead titanate thin films (similar to 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.
publisher	AMER CHEMICAL SOC
issn	0743-7463
year published	2012
volume	28
issue	5
beginning page	2944
ending page	2949
digital object identifier (doi)	10.1021/la204168w
web of science category	Chemistry, Multidisciplinary; Chemistry, Physical; Materials Science, Multidisciplinary
subject category	Chemistry; Materials Science
unique article identifier	WOS:000299864500079