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High Temperature Neutron Diffraction Study of the Formation Reaction of Bismuth Superconductors

Published online by Cambridge University Press:  28 February 2011

Mary F. Garbauskas ,
Ronald H. Arendt ,
James D. Jorgensen  and
Richard L. Hitterman
Mary F. Garbauskas
Affiliation:
General Electric Corporate Research and Development, Schenectady, NY 12301
Ronald H. Arendt
Affiliation:
General Electric Corporate Research and Development, Schenectady, NY 12301
James D. Jorgensen
Affiliation:
Materials Science Division, Argonne National Laboratory, Argonne, IL 60439
Richard L. Hitterman
Affiliation:
Materials Science Division, Argonne National Laboratory, Argonne, IL 60439
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Abstract

High temperature neutron powder diffraction has been used to study the formation of the 110K transition temperature material, Bi2Ca2Sr2Cu3Ox (2223), both from synthetic reaction mixtures and after partial melting. The results indicate that the 80K transition temperature material, Bi2CaSr2Cu2Ox (2122), is the precursor to the (2223) material. The reaction to form the (2122) occurs rapidly at 860°C, while the conversion of this material to the (2223) is much slower.

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References

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