Method for increasing the critical current density in type II superconducting materials
OwnerAnatoly Frenkelinventor
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Abstract
Method for increasing the critical current density in Type II superconducting materials. The generation of a regular pattern of defects for pinning vortices, where the density of pinning sites is matched to the density of vortices produced by a chosen magnetic field in the particular superconducting material, is described. It is anticipated that such a defect pattern will substantially increase the critical current density carrying capability of the superconducting material so patterned. The fabrication of thick superconductors and conductors having chosen shapes is also described.
Claims12
A method for increasing the critical current density in Type II superconducting materials, which comprises the steps of:
- a. generating a film of a Type II superconducting material;
- and
- b. creating a regular two-dimensional superlattice of point defects in the film using nanoscale lithography.
A method for increasing the critical current density in Type II superconducting materials, which comprises the steps of:
- a. creating a regular two-dimensional superlattice of point defects on the surface of a substrate;
- and
- b. growing a film of Type II superconducting material on the substrate, whereby the regular two-dimensional superlattice of point defects of the substrate is copied onto the film.
A method for increasing the critical current density in Type II superconducting materials, which comprises the steps of:
- a. creating a first, regular two-dimensional superlattice of point defects on the surface of a substrate;
- b. growing a first, film of Type II superconducting material on the substrate, whereby the first, regular two-dimensional superlattice of point defects is copied into the film, but not through to the surface thereof;
- c. creating a second, regular two-dimensional superlattice of point defects on the surface of the film;
- and
- d. growing a second, Type II superconducting material film on the first film in such a manner that the second, regular two-dimensional superlattice of point defects is copied therein, whereby a desired thickness of high-temperature superconducting material is achieved.
Dependencies are inferred from the claim text.