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Magnetization studies of the high-Tc compound Y 1Ba2Cu3Oz

Published online by Cambridge University Press:  31 January 2011

J. R. Thompson
Affiliation:
Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6061 and Department of Physics, University of Tennessee, Knoxville, Tennessee 37996-1200
D. K. Christen
Affiliation:
Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6061
S. T. Sekula
Affiliation:
Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6061
J. Brynestad
Affiliation:
Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6061
Y. C. Kim
Affiliation:
Department of Physics, University of Tennessee, Knoxville, Tennessee 37996-1200
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Abstract

The superconductive state magnetization of the high-Tc compound Y1Ba2Cu3Oz has been investigated. Single-phase, polycrystalline samples of this archetype were prepared by solidstate reaction. The onset of the superconductive transition, measured magnetically, was 90.7 K. In addition to low-field dc magnetization results, measurements of the magnetic critical current density Jc (H,T) are presented as a function of magnetic field and temperature. The low values of Jc, especially at high temperature, are discussed in terms of intergranular supercurrents that flow within individual grains in superconductive layers of reduced dimensionality.

Type
Articles
Copyright
Copyright © Materials Research Society 1987

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References

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