1994
DOI: 10.1557/jmr.1994.2231
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An optimum heating program for fabricating MTG Bi1.6Pb0.4Sr2Ca2Cu3Oy superconductors

Abstract: Following our recent report on the successful fabrication of "stationary" MTG Bii.6Pbo.4Sr2Ca2Cu303, pellets in a simple tube furnace, we have tried many heating programs with various "crystal growth starting temperatures", Ts, and sintering temperatures, Te; the samples are sintered for 20-40 h before quenching in air. It is found that Ts-Te should be rather narrow to produce good MTG samples, and the typical value of Jc is enhanced from 100 A cm"2 (for a polycrystalline sample) to about 3 X 103 A cm"2 for ou… Show more

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