Electrical resistivity, temperature coefficient of resistivity, Hall coefficient, and Hall mobility of nickel films were measured simultaneouslyinsituat temperatures ranging from 30 to 150 °C. Ordinary (R0) and extraordinary (R1) parts of Hall constant were determined from the plot of Hall electric field per unit current density per thickness versus magnetic field for various thicknesses. An oscillatory behavior in theR1‐vs‐thickness plot was observed.