SUPERCONDUCTING NIOBIUM CARBONITRIDE FIBERS, AND METHOD FOR THE PREPARATION THEREOF

摘要

Fine diameter continuous multifilament superconductor yarns comprising niobium carbonitride may be prepared. The fibers of which the yarn is composed possess a very high transition temperature (Tc of 17.degree.K) combined with a good upper critical field (HC2 of 125 kG) and critical current density (J? of 105 amps/cm2 at 40 kG). This invention provides excellent superconducting materials in the form of continuous fine diameter multifilament yarn.