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Domain structures in Pb(Zr, Ti)O3 and PbTiO3 thin films

Published online by Cambridge University Press:  31 January 2011

L. D. Madsen ,
E. M. Griswold  and
L. Weaver
L. D. Madsen
Affiliation:
Department of Materials Science and Engineering, McMaster University, Hamilton, Ontario, Canada L8S 4M1
E. M. Griswold
Affiliation:
Materials and Metallurgical Engineering, Queen's University, Kingston, Ontario, Canada K7L 3N6
L. Weaver
Affiliation:
Materials and Metallurgical Engineering, Queen's University, Kingston, Ontario, Canada K7L 3N6
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Abstract

The microstructure of Pb(Zr, Ti)O3 (PZT) and PbTiO3 (PT) thin films deposited by the sol-gel method and chemical vapor deposition, respectively, were examined by transmission electron microscopy (TEM). Domains with ∼7 and ∼20 nm widths were found for the PZT and PT thin films, respectively. The traditional parallel twin or wedge-type structures found in bulk ceramics have been observed in thin films. Differences between observed grain sizes and previous studies of similar compounds (in bulk form) are accounted for by geometrical considerations related to crystallographic factors. Finally, a classification scheme for domains in PZT and PT thin films based on these and other published results of several researchers is presented. Domain sizes varied according to three categories: mono-domains (2–50 nm in diameter), domains in spherulite lamellae (28–130 nm wide), and twins in conventional large grains (5–150 nm wide). The mono-domains are related to small grain sizes, while the lamellae are a function of the nucleation and growth associated with sol-gel processing.

Type
Articles
Information
Journal of Materials Research , Volume 12 , Issue 10 , October 1997 , pp. 2612 - 2616
Copyright
Copyright © Materials Research Society 1997

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