Powder containing thallium, calcium, barium and copper

Superconductor technology: apparatus – material – process – High temperature – per se – Having tc greater than or equal to 150 k

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252521, 423604, 423624, 423635, 502525, 505737, 505734, 505783, 501123, H01B 1200, H01B 106, H01L 3912

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active

050214004

ABSTRACT:
Improved process for making Tl-Ca-Ba-CuO superconductors. A solution of the monocarboxylates (e.g., acetates) of Ca, Ba, and Cu is dried, calcined, mixed with Tl.sub.2 O.sub.3, and the mixture is heated to make a superconductor. The method minimizes introduction of contaminants. Novel compositions result.

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