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Title: Inductively-Charged High-Temperature Superconductors And Methods Of Use

Patent ·
OSTI ID:880080

The invention provides methods of charging superconducting materials and, in particular, methods of charging high-temperature superconducting materials. The methods generally involve cooling a superconducting material to a temperature below its critical temperature. Then, an external magnetic field is applied to charge the material at a nearly constant temperature. The external magnetic field first drives the superconducting material to a critical state and then penetrates into the material. When in the critical state, the superconducting material loses all the pinning ability and therefore is in the flux-flow regime. In some embodiments, a first magnetic field may be used to drive the superconducting material to the critical state and then a second magnetic field may be used to penetrate the superconducting material. When the external field or combination of external fields are removed, the magnetic field that has penetrated into the material remains trapped. The charged superconducting material may be used as solenoidal magnets, dipole magnets, or other higher order multipole magnets in many applications.

Research Organization:
Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
DOE Contract Number:
FG02-93ER12134
Assignee:
Massachusetts Institute of Technology (Cambridge, MA)
Patent Number(s):
US 6621395
Application Number:
10/592897
OSTI ID:
880080
Country of Publication:
United States
Language:
English

References (8)

Quasipermanent magnets of high temperature superconductor: Temperature dependence journal June 1993
Progress in Jc, Pinning, and Grain Size, for Trapped Field Magnets book January 1994
Evaluation of YBa/sub 2/Cu/sub 3/O/sub 7-x/ bulk superconductors for high field magnet applications journal March 1993
Quasi permanent superconducting magnet of very high field journal July 1993
Unusually large shielding fields in single‐grain YBa 2 Cu 3 O 7−δ journal August 1994
Improvement in Magnetic Shielding by Use of a Triple-Cylinder Configuration of Superconducting BPSCCO book January 1994
Permanent magnets of high‐ T c superconductors journal May 1993
Influence of Wall Thickness on Magnetic Shielding Effects of BPSCCO Cylinders book January 1994