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Local piezoelectric and ferroelectric responses in nanotube-patterned thin films of BaTiO3 synthesized hydrothermally at 200 °C

Published online by Cambridge University Press:  01 March 2006

Rosalía Poyato ,
Bryan D. Huey  and
Nitin P. Padture
Rosalía Poyato
Affiliation:
Department of Materials Science and Engineering, Institute of Materials Science, University of Connecticut, Storrs, Connecticut 06269
Bryan D. Huey
Affiliation:
Department of Materials Science and Engineering, Institute of Materials Science, University of Connecticut, Storrs, Connecticut 06269
Nitin P. Padture*
Affiliation:
Department of Materials Science and Engineering, The Ohio State University, Columbus, Ohio 43210
*
b) Address all correspondence to this author.e-mail: [email protected]
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Abstract

Piezoresponse atomic-force microscopy (PFM) has been used to characterize the local piezoelectric properties of a novel, nanotube-patterned (“honeycomb”) thin film of BaTiO3 on Ti substrate synthesized hydrothermally at 200 °C. PFM amplitude and phase images, prior to the application of any direct current (dc) field, show ring-shaped piezoelectric regions that correspond to the nanostructure of this film. These results show clearly that the as-synthesized nanotube-patterned BaTiO3 thin film is piezoelectric, with a net spontaneous polarization perpendicular to the film–substrate interface. In addition, polarization switching and hysteresis were observed as a function of applied dc field, confirming that this novel fabrication procedure results in unique configurations of BaTiO3 film that are also ferroelectric.

Keywords

FerroelectricFilmNanostructure
Type
Rapid Communications
Information
Journal of Materials Research , Volume 21 , Issue 3 , March 2006 , pp. 547 - 551
Copyright
Copyright © Materials Research Society 2006

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