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Physico-Chemical Characterization of the Coprecipitated Y-Ba-Cu-O Fine Powders

Published online by Cambridge University Press:  25 February 2011

H. M. Jang ,
K. W. Moon ,
J. H. Moon ,
H. S. Shin ,
S. J. Kwon  and
S. Baik
H. M. Jang
Affiliation:
Department of Materials Science and Metallurgy, Pohang Institute of Science and Technology (POSTECH), Pohang, Republic of, Korea
K. W. Moon
Affiliation:
Department of Materials Science and Metallurgy, Pohang Institute of Science and Technology (POSTECH), Pohang, Republic of, Korea
J. H. Moon
Affiliation:
Department of Materials Science and Metallurgy, Pohang Institute of Science and Technology (POSTECH), Pohang, Republic of, Korea
H. S. Shin
Affiliation:
Department of Materials Science and Metallurgy, Pohang Institute of Science and Technology (POSTECH), Pohang, Republic of, Korea
S. J. Kwon
Affiliation:
Department of Materials Science and Metallurgy, Pohang Institute of Science and Technology (POSTECH), Pohang, Republic of, Korea
S. Baik
Affiliation:
Department of Materials Science and Metallurgy, Pohang Institute of Science and Technology (POSTECH), Pohang, Republic of, Korea
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Abstract

Y-Ba-Cu-o fine powders were prepared by coprecipitating in the oxalate form from metal nitrates solution. The stoichiometry of metals in the precipitate was adjusted by systematic change of copper nitrate (or yttrium nitrate) concentration for a fixed concentration of barium nitrate in the ruactant. Approximately one micron size powders, with a uniform size distribution, were obtained by this new approach. The optimum condition for calcination and sintering was studied by thermal gravimetric analysis(TGA), X-ray powder diffraction(XRD) and scanning electron microscopy(SEM).

Information

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 121: Symposium H – Better Ceramics Through Chemistry III , 1988 , 407
Copyright
Copyright © Materials Research Society 1988

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References

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