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The influence of precursor powder on the microstructure and properties of Bi-2212 blocks

✍ Scribed by A. Polasek; L.A. Saléh; C.V. de Sena; M.A. Sens; E.T. Serra; F. Rizzo

Publisher
Elsevier Science
Year
2007
Tongue
English
Weight
197 KB
Volume
460-462
Category
Article
ISSN
0921-4534

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Partial melt-processed Bi 2 Sr 2 Ca 1 Cu 2 O 8+d (Bi-2212) materials have low critical current densities (j c ) when made from precursors where melting occurred during the calcination. In this paper, the origin of melt formation during calcination of a stoichiometric Bi:2, Sr:2, Ca:1, Cu:2 mixture o