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New tricks in the rapid quench route to high Tc materials

Published online by Cambridge University Press:  31 January 2011

A.E. Miller ,
K. Nassau  and
D.J. Werder
A.E. Miller
Affiliation:
AT&T Bell Laboratories, Murray Hill, New Jersey 07974-2070
K. Nassau
Affiliation:
AT&T Bell Laboratories, Murray Hill, New Jersey 07974-2070
D.J. Werder
Affiliation:
AT&T Bell Laboratories, Murray Hill, New Jersey 07974-2070
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Abstract

High Tc materials containing Bi form glasses when quenched from their melts. These materials pass through a number of intermediate phases when furnace heated, causing chemical segregation along the way; extended annealing is then required to achieve a chemically uniform product. Chemical uniformity is preserved from the glass directly to a high Tc phase by placing the glass suddenly into a furnace at a temperature in which the final product is stable. In addition, it was found possible to hot press the glass flakes into a compact at a sufficiently low temperature without chemical segregation so that a sudden heating step will achieve the same result in bulk material.

Type
Articles
Information
Journal of Materials Research , Volume 8 , Issue 5 , May 1993 , pp. 973 - 977
Copyright
Copyright © Materials Research Society 1993

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References

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