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

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.
Inventors:
 [1]
  1. (Kensington, CA)
Issue Date:
OSTI Identifier:
869961
Assignee:
Regents of University of California (Oakland, CA) LBNL
Patent Number(s):
US 5430008
Contract Number:
AC03-76SF00098
Research Org:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA
Country of Publication:
United States
Language:
English
Subject:
method; composition; improving; flux; pinning; critical; current; superconductors; superconducting; materials; methods; forming; disclosed; highly; oxidized; heated; relatively; temperature; release; oxygen; migrates; material; form; non-superconducting; phase; diffuse; grains; reoxidized; leaving; inclusions; inside; centers; superconductor; increasing; flux pinning; pinning centers; conducting material; superconducting material; critical current; superconducting materials; oxidized superconductors; superconducting phase; highly oxidized; forming superconducting; /505/252/