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US 2010/0113280 A1Published application
Porous ceramic high temperature superconductors and method of making same
OwnerJudy Wu, Rose Emergo +2inventors
InventorsJudy Wu, Rose Emergo, Timothy Haugan, Paul Barnes
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Abstract
Porous ceramic superconductors having a film thickness over 0.5 microns are provided. The superconducting material is applied to a vicinal substrate and optionally nanoparticles are inserted to release local strain. The resultant superconductors exhibit improved Jc values compared to nonvicinal (flat) counterparts and those having no nanoparticles.
Claims36
As superconductive device comprising:
- a vicinal substrate;
- a porous superconducting layer overlying said substrate, said superconducting layer having a thickness greater than 0.5 microns, and having a plurality of pores therein, wherein said pores have a pore size between about 30 and 300 nm.
A method for improving the critical current density of a superconducting article having a thickness above 0.5 microns comprising:
- providing a substrate;
- tilting the substrate an angle greater than zero to provide a vicinal substrate;
- depositing a superconducting layer over said vicinal substrate, said superconducting layer having a thickness greater than 0.5 microns and having a plurality of pores therein, wherein said pores have a pore size between about 30 and 300 nm.
A method for forming a superconducting device comprising:
- providing a substrate;
- tilting the substrate at an angle greater than zero to provide a vicinal substrate;
- providing a porous superconducting layer over said vicinal substrate, said superconducting layer formed by alternating a deposition of a superconducting material film with a deposition of nanoparticles of a second material.
Dependencies are inferred from the claim text.