The Hall and Nernst-Ettinghausen effects and the electrical resistivity in nickel and cupronickel alloys with a Cu concentration of 4.6-30 wt.% are investigated in the temperature range from 78 K to the Curie temperature. On the basis of the data obtained on the magnitude and sign of the anomalous Hall and Nernst-Ettinghausen constants, the basic type of carriers of the anomalous Hall current in the alloys is determined. It is shown that variation in the given effects with concentration is associated with the state density of the d band.
Department of Magnetism, Faculty of Physics, Moscow State University, Leninskie Gory, Moscow, 119992, Russia
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