Oxide superconductor, superconducting wire and coil using the same and method of production thereof
US5318948A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 13, 1992 |
| Grant date | Jun 7, 1994 |
| Priority date | — |
| Expiry date | Apr 13, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S505/785
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A high-temperature oxide superconductor is provided and comprises oxide crystals oriented in a certain direction, the oxide superconductor being substantially free of or containing a controlled amount of foreign phases, a non-superconducting phase and weak superconducting phase which are harmful for superconducting characteristics in the grains of the crystals and at the grain boundaries between the crystals. The foreign phases, if any, are finely and uniformly dispersed in the grains of the oxide crystals and at the grain boundaries. A wire made from the oxide superconductor, a coil from the wire, and a magnetic field generator from the coil are disclosed, the superconductor wire having only a single layer of oxide crystal grains in the thickness direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.