Magnetoresistance up to 50T of highly strengthened Cu–Ag conductors for pulsed high field magnets

The resistance of cold worked Cu–xwt.%Ag alloys (x=7 and x=24) is measured in dependence of magnetic field and temperature. The magnetoresistance (MR) in the field range 0T⩽B⩽50T is positive and increases with magnetic field. If the magnetic field B is applied perpendicular to the transport current I, the magnetoresistance increases in the temperature range from 77K to 300K. The highest value of 14% for the MR is measured at 77K and 50T. For I‖B it was found that the MR is independent of the temperature in the investigated range from 77K to 199K. The MR is attributed to the microstructure of the alloys and appears to be independent of the Ag content of the alloys under investigation.