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Sol-Gel Processing of the Ti2Ca1Ba2Cu2O8+X High Tc Superconducting Phase

Published online by Cambridge University Press:  28 February 2011

M. R. Teepe ,
D. S. Kenzer ,
G. A. Moore  and
G. Kordas
M. R. Teepe
Affiliation:
Department of Materials Science and Engineering, Ceramics Division, and Science and Technology Center for Superconductivity, University of Illinois at Urbana-Champaign, 105 S.Goodwin, Urbana, IL 61801
D. S. Kenzer
Affiliation:
Department of Materials Science and Engineering, Ceramics Division, and Science and Technology Center for Superconductivity, University of Illinois at Urbana-Champaign, 105 S.Goodwin, Urbana, IL 61801
G. A. Moore
Affiliation:
Department of Materials Science and Engineering, Ceramics Division, and Science and Technology Center for Superconductivity, University of Illinois at Urbana-Champaign, 105 S.Goodwin, Urbana, IL 61801
G. Kordas
Affiliation:
Department of Materials Science and Engineering, Ceramics Division, and Science and Technology Center for Superconductivity, University of Illinois at Urbana-Champaign, 105 S.Goodwin, Urbana, IL 61801
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Abstract

An alkoxide Sol-Gel system was developed to produce bulk powders of the TI2Ca1Ba2Cu2O8+x high Tc superconducting phase. Methoxyethoxide and Cu(II) ethoxide precursors were used for the formation of homogeneous sols. Solubility of the Cu(II) ethoxide was aided by using a 2-methoxyethanol/methyl ethyl ketone/toluene solvent system. The sols were characterized by small angle x-ray scattering (SAXS) and TEM. Powders were produced by rotary evaporation followed by thermal treatment in a closed container with thallium metal present at 900°C for various calcination times. Powders were characterized by x-ray diffraction, resistivity and magnetic susceptibility measurements, and chemical analysis. Samples exhibited transition onsets between 100 and 110K depending upon the processing conditions.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 180: Symposium A – Better Ceramics Through Chemistry IV , 1990 , 901
Copyright
Copyright © Materials Research Society 1990

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References

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