Oxide superconductor and method for producing the same
US5670458A · kind A · utility
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2References
6Claims
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Key dates
| Filing date | Feb 7, 1996 |
| Grant date | Sep 23, 1997 |
| Priority date | — |
| Expiry date | Feb 7, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S505/776
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An oxide superconductor having a composition of the formula: A.sub.n+1 Cu.sub.n O.sub.2n+1+.delta. in which A is at least one alkaline earth metal element selected from the group consisting of calcium, strontium and barium, n is an integer of at least one, and .delta. is a number larger than 0 and not larger than 1, a laminate structure in which a layer having a partial composition of A.sub.2 O.sub.1+.delta. and a layer having a partial composition of A.sub.n-1 Cu.sub.n O.sub.2n are alternately laminated, and a superconductive critical temperature equal to or higher than the liquid nitrogen temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.