RESISTANCE MINIMUM IN EVANOHM WIRE,
Abstract
In the course of measurements on the magnetoresistance effect in various commercial wires at low temperatures the electrical resistivity of Evanohm wire (75% Ni, 20% Cr, 2.5% Al, 2.5% Cu, supplied by Wilbur-Driver Company) in zero magnetic field was measured at temperatures down to 0.3 K. The data below 4.2 K are shown. It is evident that Evanohm passes through a resistance minimum. The temperature of the minimum can be estimated from previous data to be approximately 15 K to 20 K. The observed temperature coefficient of resistance at about 0.5 K is -0.003 K to the minum 1. Such resistance minima have been observed previously in other materials, particularly dilute alloys with transition elements and the example provided by Evanohm wire may be of further interest. In addition, the existence of the marked negative temperature coefficient of resistance below 1 K in Evanohm may be of value for thermometry. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1964
- Accession Number
- AD0434386
Entities
People
- J. G. Daunt
Organizations
- Ohio State University