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The Effects of Seeding on the Formation of High-Tc Bi-Pb-Sr-Ca-Cu-O Compounds

Published online by Cambridge University Press:  28 February 2011

Cheol J. Kim ,
Mark R. DeGuire  and
Narottam P. Bansal
Cheol J. Kim
Affiliation:
Case Western Reserve University, Dept. of Materials Science and Engineering, Cleveland, OH 44106
Mark R. DeGuire
Affiliation:
Case Western Reserve University, Dept. of Materials Science and Engineering, Cleveland, OH 44106
Narottam P. Bansal
Affiliation:
NASA Lewis Research Center, Materials Division, Cleveland, OH 44135
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Abstract

The effect of adding of Bi1.80Pb1.33Sr1.87Ca2Cu3O2 seeds(the 37Å phase) to the polycrystalline and glassy Bi-(Pb)-Sr-Ca-Cu-O materials was studied using XRD and SEM. The seeding effect was observed at 835 °C, 855 °C, and 870 °C in several compositions. Adding pre-synthesized 37Å phase powder to a mixture of unreacted starting materials accelerates the formation of additional 37Å phase.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 169: Symposium M – High Temperature Superconductors: Fundamental Properties and Novel Materials Processing , 1989 , 333
Copyright
Copyright © Materials Research Society 1990

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References

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