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Sol-gel processing of PbTiO3 and Pb(Zr0.52Ti0.48)O3 fibers

Published online by Cambridge University Press:  31 January 2011

Ulagaraj Selvaraj ,
A.V. Prasadarao ,
Sridhar Komarneni ,
Keith Brooks  and
Stewart Kurtz
Ulagaraj Selvaraj
Affiliation:
Materials Research Laboratory, The Pennsylvania State University, University Park, Pennsylvania 16802
A.V. Prasadarao*
Affiliation:
Materials Research Laboratory, The Pennsylvania State University, University Park, Pennsylvania 16802
Sridhar Komarneni*
Affiliation:
Materials Research Laboratory, The Pennsylvania State University, University Park, Pennsylvania 16802
Keith Brooks
Affiliation:
Materials Research Laboratory, The Pennsylvania State University, University Park, Pennsylvania 16802
Stewart Kurtz
Affiliation:
Materials Research Laboratory, The Pennsylvania State University, University Park, Pennsylvania 16802
*
a) On leave from Andhra University, Visakhapatnam, India.
b) Also with the Department of Agronomy.
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Abstract

Homogeneous and stoichiometric PbTiO3 and PbZr0.52Ti0.48O3 gel fibers were drawn from viscous solutions prepared by sol-gel processing of alkoxide precursors. The fibrous gels on heating at 450 and 600 °C, respectively, formed the well-crystallized phases of PbTiO3 and PbZr0.52Ti0.48O3. Fibers heat treated at 700 °C are a few centimeters long and 50 to 150 μm in diameter. PbZr0.52Ti0.48O3 fibers subjected to heat treatment at 700 °C for 1 h consisted of fully dense submicron grains (0.15 to 0.2 μm). However, PbTiO3 fibers under analogous conditions showed a few micropores with grains of ∼0.1 μm. Dielectric constants of these PbTiO3 and PbZr0.52Ti0.48O3 fibers were approximately 300 and 800, respectively.

Type
Articles
Information
Journal of Materials Research , Volume 7 , Issue 4 , April 1992 , pp. 992 - 996
Copyright
Copyright © Materials Research Society 1992

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