MAGNETIC PROPERTIES OF VERY THIN LAYERS OF NICKEL

The curves of the Hall effect for various thicknesses of nickel films indicate inversion in fields all the weaker as the thickness is a minimum. The magnetization constant determined as a function of film thickness has a maximum in the neighborhood of 100 A and the field oonstant has a minimum. The contribution of the conduction electrons of the 4s band and the holes of tbe 3d band to the conductivity is discussed. (J.S.R.)