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Lanthanum doping of YBa2Cu3Ox

Published online by Cambridge University Press:  31 January 2011

D. J. L. Hong ,
A. Mehta ,
D. M. Smyth ,
E. K. Chang  and
M. J. Kirschner
D. J. L. Hong
Affiliation:
Materials Research Center, Lehigh University, Bethlehem, Pennsylvania 18015
A. Mehta
Affiliation:
Materials Research Center, Lehigh University, Bethlehem, Pennsylvania 18015
D. M. Smyth
Affiliation:
Materials Research Center, Lehigh University, Bethlehem, Pennsylvania 18015
E. K. Chang
Affiliation:
The BOC Group, Inc., Technical Center, Murray Hill, New Jersey 07974
M. J. Kirschner
Affiliation:
The BOC Group, Inc., Technical Center, Murray Hill, New Jersey 07974
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Abstract

A wide variety of cation substitutions have been tried in the 1-2-3 compound, YBa2Cu3Ox, in the hope that its superconducting properties can be improved. While significant improvement has not been achieved, the response of the material to such substitutions can still be helpful in understanding its defect chemistry. In this paper, we report on measurements of the equilibrium oxygen content, by thermogravimetry, and the electrical conductivity of YBa2−zLazCu3Ox, with z = 0, 0.1, and 0.2. The results are consistent with the view that the stoichiometric composition for this system, YBa2Cu3O6, is a highly acceptor-doped material.

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Type
Articles
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Journal of Materials Research , Volume 5 , Issue 6 , June 1990 , pp. 1185 - 1188
Copyright
Copyright © Materials Research Society 1990

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References

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