Method and composition for improving flux pinning and critical current in superconductors

Title: Method and composition for improving flux pinning and critical current in superconductors

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Superconducting materials and methods of forming superconducting materials are disclosed. Highly oxidized superconductors are heated at a relatively high temperature so as to release oxygen, which migrates out of the material, and form a non-superconducting phase which does not diffuse out of grains of the material. The material is then reoxidized at a lower temperature, leaving the non-superconducting inclusions inside a superconducting phase. The non-superconducting inclusions act as pinning centers in the superconductor, increasing the critical current thereof. 14 figs.

Inventors:: Morris, D.E.

Issue Date:: 1995-07-04

OSTI Identifier:: 87725

Assignee:: Univ. of California, Oakland, CA (United States) PTO; SCA: 665411; PA: EDB-95:121074; SN: 95001431098

Patent Number(s):: US 5,430,008/A/

Application Number:: PAN: 7-783,730

Contract Number:: AC03-76SF00098

Resource Relation:: Other Information: PBD: 4 Jul 1995

Research Org:: University of California

Country of Publication:: United States

Language:: English

Subject:: 66 PHYSICS; SUPERCONDUCTORS; FABRICATION; MAGNETIC FLUX; CRITICAL CURRENT; SUPERCONDUCTIVITY

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