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Ultra-Low-Field Squid Magnetic Measurements on High Temperature Ceramic YBaCuO Superconductors

Published online by Cambridge University Press:  28 February 2011

D. C. Cronemeyer ,
A. P. Malozemoff  and
T. R. Mcguire
D. C. Cronemeyer
Affiliation:
IBM Research Center, Yorktown Heights, NY 10598–0218
A. P. Malozemoff
Affiliation:
IBM Research Center, Yorktown Heights, NY 10598–0218
T. R. Mcguire
Affiliation:
IBM Research Center, Yorktown Heights, NY 10598–0218
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Abstract

We report ultra-low-field (5 mOe - 1 Oe) magnetic measurements on a ceramic sample of YBaCuO. A positive remanent moment is observed which accurately equals the difference of the field-cooled and zero-field-cooled moments throughout the temperature range. At higher fields this relationship breaks down. A reversible region is observed near the superconducting transition temperature which is independent of field. These results are discussed in the context of recent models.

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Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 99: Symposium AA – High-Temperature Superconductors , 1987 , 837
Copyright
Copyright © Materials Research Society 1988

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References

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