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Preparation of thin Film YBa2CU3O6+X Ceramic Superconductors by the Sol-Gel Process

Published online by Cambridge University Press:  28 February 2011

S. Kramer ,
K. Wu  and
G. Kordás
S. Kramer
Affiliation:
Department of Materials Science and Engineering, Ceramics Divisron and Materials Research Laboratory, University of Illinois at Urbana-Champaign
K. Wu
Affiliation:
Department of Materials Science and Engineering, Ceramics Divisron and Materials Research Laboratory, University of Illinois at Urbana-Champaign
G. Kordás
Affiliation:
Department of Materials Science and Engineering, Ceramics Divisron and Materials Research Laboratory, University of Illinois at Urbana-Champaign
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Abstract

High Tc superconducting powders and thin films on silicon have been fabricated by the sol-gel process. Both powder and film preparation involved the synthesis of metal alkoxides, followed by the complexation of yttrium, barium, and copper alkoxides in a common solvent. Bulk gels were then vacuum dried and fired at 700 and 950 °C in flowing oxygen. Thin films on (100) silicon were fired at 700 °C in flowing oxygen. Susceptibility vs temperature measurements showed that the thin films on silicon had a Tc of 40 K while the bulk gels fired under the same conditions had a Tc of 75 K. The sample fired at 950 °C was superconducting at 90 K.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 99: Symposium AA – High-Temperature Superconductors , 1987 , 323
Copyright
Copyright © Materials Research Society 1988

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References

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