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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.

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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