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Orientation of rapid thermally annealed lead zirconate titanate thin films on (111) Pt substrates

Published online by Cambridge University Press:  03 March 2011

Keith G. Brooks
Affiliation:
Département de Materiaux, Laboratoire de Céramique, Ecole Polytechnique Fédérale de Lausanne, Lausanne, CH-1015, Switzerland
Ian M. Reaney
Affiliation:
Département de Materiaux, Laboratoire de Céramique, Ecole Polytechnique Fédérale de Lausanne, Lausanne, CH-1015, Switzerland
Radosveta Klissurska
Affiliation:
Département de Materiaux, Laboratoire de Céramique, Ecole Polytechnique Fédérale de Lausanne, Lausanne, CH-1015, Switzerland
Y. Huang
Affiliation:
Département de Materiaux, Laboratoire de Céramique, Ecole Polytechnique Fédérale de Lausanne, Lausanne, CH-1015, Switzerland
L. Bursill
Affiliation:
Département de Materiaux, Laboratoire de Céramique, Ecole Polytechnique Fédérale de Lausanne, Lausanne, CH-1015, Switzerland
N. Setter
Affiliation:
Département de Materiaux, Laboratoire de Céramique, Ecole Polytechnique Fédérale de Lausanne, Lausanne, CH-1015, Switzerland
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Abstract

The nucleation, growth, and orientation of lead zirconate titanate thin films prepared from organometallic precursor solutions by spin coating on (111) oriented platinum substrates and crystallized by rapid thermal annealing was investigated. The effects of pyrolysis temperature, post-pyrolysis thermal treatments, and excess lead addition are reported. The use of post-pyrolysis oxygen anneals at temperatures in the regime of 350–450 °C was found to strongly affect the kinetics of subsequent amorphous-pyrochlore-perovskite crystallization by rapid thermal annealing. The use of such post-pyrolysis anneals allowed films of reproducible microstructure and textures [both (100) and (111)] to be prepared by rapid thermal annealing. It is proposed that such anneals and pyrolysis temperature affect the oxygen concentration/average Pb valence in the amorphous films prior to annealing. Such changes in the Pb valence state then affect the stability of the transient pyrochlore phase and thus the kinetics of perovskite crystallization.

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Articles
Copyright
Copyright © Materials Research Society 1994

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References

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