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Crystallization Behavior of Chemically Prepared and Rapidly Solidified PbTiO3

Published online by Cambridge University Press:  25 February 2011

Robert W. Schwartz  and
D. A. Payne
Robert W. Schwartz
Affiliation:
Department of Materials Science and Engineering, and The Center for Compound Semiconductor Microelectronics, University of Illinois at Urbana-Champaign, 105 S. Goodwin Avenue, Urbana, IL 61801
D. A. Payne
Affiliation:
Department of Materials Science and Engineering, and The Center for Compound Semiconductor Microelectronics, University of Illinois at Urbana-Champaign, 105 S. Goodwin Avenue, Urbana, IL 61801
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Abstract

The crystallization behavior of chemically prepared and rapidly solidified PbTiO3 was investigated. Chemical methods were (i) polymeric sol-gel processing and (ii) co-precipitation of fine particles. Rapid solidification was obtained by a twin-roller quencher. Details are reported for the processing methods and the characteristics of the materials. X-ray diffraction and electron microscopy confirmed the amorphous nature of the prepared materials. Crystallization was examined as a function of heat-treatment conditions. Non-isothermal DSC was used to determine the kinetics of crystallization. Activation energies and frequency factors were determined. Co-precipitated PbTiO3 crystallized at the lowest temperature of 375 C, followed by sol-gel at 425 C, and rapidly solidified at 475 C. The results are interpreted in terms of processing routes, structural free-energies, available surface areas and fractional free volumes.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 121: Symposium H – Better Ceramics Through Chemistry III , 1988 , 199
Copyright
Copyright © Materials Research Society 1988

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References

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