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On the Stability of YBa2Cu3O7-y with Refractory Ceramics

Published online by Cambridge University Press:  28 February 2011

P. Del Angel ,
J. M. Dominguez ,
C. Falcony ,
O. Guzman ,
A. Montoya  and
L. Vicente
P. Del Angel
Affiliation:
Instituto Mexicano Del Petroleo, Ica, Apdo. Postal 14–805, 07730 Mexico, D.F.
J. M. Dominguez
Affiliation:
Instituto Mexicano Del Petroleo, Ica, Apdo. Postal 14–805, 07730 Mexico, D.F.
C. Falcony
Affiliation:
Cinvestav - I.P.N.
O. Guzman
Affiliation:
Instituto Mexicano Del Petroleo, Ica, Apdo. Postal 14–805, 07730 Mexico, D.F.
A. Montoya
Affiliation:
Instituto Mexicano Del Petroleo, Ica, Apdo. Postal 14–805, 07730 Mexico, D.F.
L. Vicente
Affiliation:
Facultad De Quimica, Unam, 04510 Mexico, D.F.
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Abstract

A series of ceramic oxides were prepared by adding alumina to the superconductor YBaCuO. The solids were characterized by X-ray diffraction, transmission (TEM) and scanning electron microscopy (SEM) with EDS and electrical measurements. Partial drops in electrical resistance (R ≠ 0) indicate the presence of superconducting phases trapped in ceramic masses. Additionally, the systematic diminution of Tc could indicate a partial substitution of Cu by Al.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 169: Symposium M – High Temperature Superconductors: Fundamental Properties and Novel Materials Processing , 1989 , 1169
Copyright
Copyright © Materials Research Society 1990

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References

1 Cheung, C.T. and Ruckenstein, E., J. Mat. Res. 4, 1 (1989).Google Scholar
2 Naito, M., Hammond, R.H., Oh, B., Hahn, M.R., Hsu, J.W., Kapitulnik, P., J. Mat. Res. 2, 713 (1987).Google Scholar