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Controlled partial melting during isobaric and isothermal processing of dipcoated Bi-2212/Ag tapes

Published online by Cambridge University Press:  31 January 2011

A. L. Crossley  and
J. L. MacManus-Driscoll
A. L. Crossley
Affiliation:
Centre for High Temperature Superconductivity, Imperial College of Science, Technology and Medicine, London SW7 2BZ, United Kingdom
J. L. MacManus-Driscoll
Affiliation:
Centre for High Temperature Superconductivity, Imperial College of Science, Technology and Medicine, London SW7 2BZ, United Kingdom
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Abstract

A detailed study has been made of the control and optimization of partial melting of dipcoated Bi2Sr2Ca1Cu2O8+δAg0.1 (Bi-2212) tapes using reduced oxygen partial pressures. A coulometric titration technique has been employed to vary the oxygen partial pressure in a region of the phase diagram corresponding to binary melting, and the amount of partial melting has been quantified. Using this information, tapes have been processed using both isothermal and isobaric techniques. An optimum processing route was determined which combined isothermal and isobaric processes. Highly aligned material at the point of optimum melting was obtained.

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Articles
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Journal of Materials Research , Volume 13 , Issue 12 , December 1998 , pp. 3580 - 3586
Copyright
Copyright © Materials Research Society 1998

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