ELECTRONICS RESEARCH PROGRAM. LOW-TEMPERATURE ELECTRONICS.
Abstract
Research in low-temperature electronics consisted primarily of measurement of the performance of critical current - critical field (Ic-Hc) characteristics of annealed niobium wire specimens. In the experiments performed, the peak effect in the Ic-Hc characteristics occurred only for H perpendicular to the sample axis (and the current flow) and only for samples which were annealed at temperatures of 1400 C and above. For fields parallel to the current, an anomalous resistance was noticed for fields and currents well within the values which usually allow the sample to be superconducting. This island effect, to date, does not have a satisfactory explanation. Correlation of the field at which the peak effect occurs and the Hc2 of the Abrikosov theory show satisfactory agreement and indicate that niobium is intrinsically a superconductor of the second type. Some limited experimental work was performed on thin filamentary superconductors. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 06, 1963
- Accession Number
- AD0428328
Entities
People
- F. L. Vernon Jr.
Organizations
- The Aerospace Corporation