Compositions electrically superconducting above 120.degree.k...

Details Compositions electrically superconducting above 120.degree.k... Compositions electrically superconducting above 120.degree.k...

H - Electricity

01

B

31/167

H01B 12/00 (2006.01) B22D 23/06 (2006.01) B22D 41/00 (2006.01) C22C 1/02 (2006.01)

Patent

CA 1341499

Stable, bulk electrical superconductors are prepared by heating mixed metal oxides in the presence of oxygen in a closed vessel in a preheated oven for 1-5 hours at 850-900°C. The final oxides are in the molar ratio Tl0.6-1.1 Ca2-3Ba0.75-1.25Cu2-3O(5+.delta.)-(9+.delta.), where .delta. is less than one.

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