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Preparation of Strontium Titanate Ceramics and Internal Boundary Layer Capacitors by the Pechini Method

Published online by Cambridge University Press:  15 February 2011

K. D. Budd  and
D. A. Payne
K. D. Budd
Affiliation:
Department of Ceramic Engineering and Materials Research LaboratoryUniversity of Illinois at Urbana-Champaign105 South Goodwin Avenue, Urbana IL 61801
D. A. Payne
Affiliation:
Department of Ceramic Engineering and Materials Research LaboratoryUniversity of Illinois at Urbana-Champaign105 South Goodwin Avenue, Urbana IL 61801
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Abstract

High purity, fine-grain size, SrTiO3 ceramics were fabricated from powders which were chemically derived by the Pechini method. The preparation is based upon a thermally polymerizable water-ethylene glycol-citric acid system in which a wide range of metal alkoxides, carbonates, and metal salts are soluble. The process is a closed system, and lends itself to the preparation of complex oxides which can contain numerous additives and dopants. In this study, Wdoped SrTiO3 powders were prepared with various Sr:Ti ratios, and fine grain internal boundary layer capacitors were fabricated by controlled segregation in sintering. Characteristics of the resin, powder, microstructures, and electrical properties are reported. The advantages and disadvantages of this method of chemical preparation for ceramic materials are noted.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 32: Symposium B – Better Ceramics Through Chemistry I , 1984 , 239
Copyright
Copyright © Materials Research Society 1984

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References

REFERENCES

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4. Budd, K. D., Processing and Properties of Tungsten-Doped SrTiO3 Ceramics, M. S. Thesis, University of Illinois, 1983.Google Scholar