The magnetization curves of thin iron films

The magnetization curves of evaporated iron films 125–7870 Åthick were measured. A torsion magnetometer was used for the magnetic measurements. In the neighbourhood of 1100 Åan anomaly was found in the dependence of the work of magnetization and a quantity which replaces remanence on the thickness of the film. Decreased density of the film in comparison with the density of the compact metal was found by weighing.