Magnetic properties and curie point writing in amorphous metallic films

The Curie point writing in the amorphous ferrimagnetic films are described. The bits written on the films with relatively large values of
4\piM_{s}
are unsaturated. We could write and erase the saturated bits on the film with low values of
4\piM_{s}
with a low external field. The magnetic reversal profile inside the bits can be explained by the "self" demagnetizing field originating within the reversed region itself.