Method of making TIBiBaCaCuO based superconductors
AssigneeUniversity Technology Corporation
InventorsAllen M. Hermann, Veeraraghavan Badri
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Abstract
A method for producing a high temperature superconductor system having the composition TlBiBaCaCuO. The system exhibits a T.sub.c of at least 116 K. The method includes the steps of mixing compounds including Tl, Bi, Ba, Ca, Cu, and O to create a mixture. The mixture is heated. The mixture is then cooled.
Claims10
A method of preparing thallium-based 1223 superconductor system comprising a single phase composition by partially substituting bismuth at the thallium site to produce the single phase composition having the nominal composition Tl.sub.(1-x) Bi.sub.(x) Ba.sub.2 Ca.sub.2 Cu.sub.3 O.sub.(9-Y) wherein 0.0<X.ltoreq.0.2 and 0.0.ltoreq.Y.ltoreq.0.1.
A method for manufacturing a high temperature superconductor system comprising a single phase composition having the nominal composition Tl.sub.(1-x) Bi.sub.(x) Ba.sub.2 Ca.sub.2 Cu.sub.(9-Y) wherein 0.0<X.ltoreq.0.2 and 0.0.ltoreq.Y.ltoreq.0.1 comprising the steps of:
- mixing compounds including Tl, Bi, Ba, Ca, Cu, and O to create a mixture;
- heating the mixture;
- and
- cooling the mixture to produce a single phase composition having the nominal composition Tl.sub.(1-x) Bi.sub.(x) Ba.sub.2 Ca.sub.2 Cu.sub.3 O.sub.(9-Y) wherein 0.0<X.ltoreq.0.2 and 0.0.ltoreq.Y.ltoreq.0.1.
A method for manufacturing a high temperature superconducting system comprising a single phase composition comprising the steps of:
- mixing compounds including Tl, Bi, Ba, Ca, Cu, and O to create a mixture;
- heating the mixture, in a single step, to no more than 900.degree. C. for no more than 5 hours;
- and
- cooling the mixture to produce the single phase composition having the nominal composition Tl.sub.(1-x) Bi.sub.(x) Ba.sub.2 Ca.sub.2 Cu.sub.3 O.sub.(9-Y) wherein 0.0<X.ltoreq.0.2 and 0.0.ltoreq.Y.ltoreq.0.1.
Dependencies are inferred from the claim text.