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Effects of Rheological Characteristics of Sol on Preferential Orientation of Pb(Mg,Zn)1/3Nb2/3O3 Thin Films

Published online by Cambridge University Press:  15 February 2011

Hyun M. Jang  and
Mun K. Cho
Hyun M. Jang
Affiliation:
Department of Materials Science and Engineering, and Advanced Ceramics Processing Science Laboratory, Pohang University of Science and Technology (POSTECH), Pohang 790–784, Republic of Korea
Mun K. Cho
Affiliation:
Department of Materials Science and Engineering, and Advanced Ceramics Processing Science Laboratory, Pohang University of Science and Technology (POSTECH), Pohang 790–784, Republic of Korea
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Abstract

Thin films of Pb(Mg,Zn)1/3Nb2/3O3 were fabricated by spin casting the Pb-Mg-Zn-Nb-0 complex alkoxide sols on (111)Pt-coated MgO (100) planes. It was observed that the rheological characteristics of sol greatly influenced the orientation of perovskite grains after thin-film formation. A strong preferential orientation of (100)-type planes of the perovskite grains was obtained in the thin films derived from the sols exhibiting pseudoplastic behavior. Small angle X-ray scattering experiment in the Porod region was performed to correlate the observed preferential orientation with the network structure of precursors at various stages of aging. It was shown that weakly branched precursor chains led to highly oriented grains after thin-film formation.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 361: Symposium I2 – Ferroelectric Thin Films IV , 1994 , 403
Copyright
Copyright © Materials Research Society 1995

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