W. Vanroy et al., STUDY OF THE DEMAGNETIZATION AND OPTIMIZATION OF THE MAGNETIC-FIELD OF PERPENDICULAR FERROMAGNETIC THIN-FILMS USING SUB-MU-M LITHOGRAPHY, Journal of magnetism and magnetic materials, 121(1-3), 1993, pp. 197-200
The successful fabrication using holographic lithography of a submicro
n grating reducing the demagnetizing field of a perpendicular ferromag
netic thin film is reported. An increase in the extraordinary Hall eff
ect by a factor 3 is measured. The presence of holes in the film lower
s the coercive field and causes a stepwise switching.