Oxidic superconductor with a bismuth phase of the 2223 type and method of manufacture thereof

US6207619A · kind A · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Bernhard Fischer · Wien, AT
• Jens Mueller · Stuttgart, DE

Key dates

• Filing date: Dec 22, 1999
• Grant date: Mar 27, 2001
• Expiry date: Dec 22, 2019

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S505/742

Abstract

A superconductor with the Bi 2223 high T.sub.c phase is manufactured by mulitply deforming and annealing a structure composed of a material matrix and at least one core of a fabricated material of the superconductor material. At least during an initial segment of a cooling process following the final annealing, the oxygen partial pressure is lowered with decreasing temperature at least in a temperature range between 800.degree. C. and 750.degree. C. for stabilizing the 2223 phase. A rapid cooling to room temperature advantageously follows.