EFFECT OF CRYSTALLITE SIZE ON COERCIVE FORCE OF THIN ELECTRODEPOSITED NI-FE FILMS

Thin Ni-Fe films were electrodeposited onto Cu-substrates which had been evaporated onto glass microscope slides. The coercive force of the as-plated films increased with increasing crystallite size. The coercive force of films stripped from their substrates was determined after increasingly severe anneals. The results obtained suggest that for crystallite sizes in the approximate range 300 to 800 Å the coercive force does not depend appreciably on crystallite size as such. The observed increase of coercive force with annealing may be explained in terms of surface roughness. © 1968 Springer-Verlag.