Manufacture of high orientation superconductor

Abstract

Abstract PURPOSE:To obtain a high critical current density by applying a magnetic field to a fine powder shape superconducting compound oxide having an electric resistance anisotropy in a crystal axis direction with the superconducting compound oxide held in a superconductive state. CONSTITUTION:After fine powder of superconducting compound oxide having an electric resistance anisotropy in a crystal axis direction is inserted into a predetermined mold, the powder of superconductive compound oxide held in a superconductive state by cooling the superconducting compound oxide less than a superconducting transition temperature, and a magnetic field is applied to the compound oxide from a suitable direction. Thereafter, press forming is performed with applying the magnetic field to the compound oxide after holding the compound oxide in the superconductive state during a predetermind time interval and thence the sintering and the annealing are performed in a predetermined ambient. thereby the critical current density can be made high.

Inventors

• 👤 Hideaki Imai
• 👤 Hiroshi Kurokawa

Bibliographic Details