The magnetoresistances of alloys of a noble metal and a transition metal at low temperatures

Abstract

Synopsis In continuation of the measurements in zero field, the resistance of dilute alloys of copper and gold with manganese and chromium have been measured in magnetic fields (up to 20 kOersted). The decrease of resistance of these dilute alloys seems to represent a general property of alloys such as manganese in copper, silver and gold; iron in gold (Nakhimovich); chromium in gold; and iron in magnesium (Thomas and Mendoza). The latter cases are examples of a more complicated behaviour. A comparison of the results of resistance measurements at low temperatures leads to the following classification of the alloys: 1 alloys with electrical resistance independent of temperature and magnetoresistance changing according Kohler's rule; 2 alloys with a minimum in the zero field resistance and no deviations from Kohler's rule; 3 alloys with a maximum (and consequently a minimum) in the zero field resistance and a decrease of resistance in a magnetic field.