SUPERCONDUCTIVITY IN METALS AND ALLOYS
Abstract
Methods were developed for the measurement of the interphase energy in superconductors. The method and preliminary results on thin foils and films of tin are reported. A proposed examination of the thermal contact resistance between metals and liquid He is described. The apparatus is designed to measure changes in this contact resistance at the superconducting transition as well as in the normal state. Measurements of the effect of H and deuterium on the superconducting transition temperature of La revealed that they both depressed the transition temperature. Measurements were made of the transition temperatures in the system (Nb, Ta, V)3Sn. The transition temperatures range from 2.8 to 18 K and were related to a simple mass and volume dependence. Critical field measurements indicate behavior similar to that in other hard superconductors. Resistance measurements revealed a resistance anomaly near 100 K which can be related to an existing theory. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1961
- Accession Number
- AD0268781
Entities
People
- George D. Cody
- W.h. Cherry
Organizations
- RCA Corporation