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Microstructural evolution during pyrolysis of triol-based sol-gel single-layer Pb(Zr0.53Ti0.47)O3 thin films

Published online by Cambridge University Press:  31 January 2011

Zhaoxia Zhou ,
Ian M. Reaney ,
David Hind ,
Steven J. Milne ,
Andy P. Brown  and
Rik Brydson
Zhaoxia Zhou
Affiliation:
Department of Engineering Materials, University of Sheffield, Sheffield S1 3JD, U.K.
Ian M. Reaney*
Affiliation:
Department of Engineering Materials, University of Sheffield, Sheffield S1 3JD, U.K.
David Hind
Affiliation:
Department of Materials, University of Leeds, Leeds LS2 9JT, U.K.
Steven J. Milne
Affiliation:
Department of Materials, University of Leeds, Leeds LS2 9JT, U.K.
Andy P. Brown
Affiliation:
Department of Materials, University of Leeds, Leeds LS2 9JT, U.K.
Rik Brydson
Affiliation:
Department of Materials, University of Leeds, Leeds LS2 9JT, U.K.
*
a)Address all correspondence to this author.i.m.reaney@sheffield.ac.uk
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Abstract

Advanced analytical transmission electron microscopy has been used to investigate microstructural evolution during pyrolysis in triol-based sol-gel thin films. At pyrolysis temperatures up to 300 °C, the films remained amorphous; however, nanometer-sized precipitates were observed in films heat-treated up to 400 °C for 10 min. Analytical transmission electron microscopy indicated that the precipitates were Pb-rich, as well as deficient in O, Ti, and Zr. Films pyrolyzed up to 500 °C for 10 min were composed of a nanocrystalline pyrochlore phase; however, pores could be observed, situated in the same position as the nanometer-sized precipitates at 400 °C. Face-centered cubic Pb-rich crystallites were also present on the surface of pyrolyzed films but absent in the fully crystallized films annealed at 650 °C. A tentative mechanism is proposed to explain these observations.

Type
Articles
Information
Journal of Materials Research , Volume 17 , Issue 8 , August 2002 , pp. 2066 - 2074
Copyright
Copyright © Materials Research Society 2002

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