Experimental Determination of the Nonuniform Shape-Induced Anisotropy Field in Thin Ni–Fe Films

We have determined the nonuniform distribution of the shape-induced magnetic anisotropy field for patterned thin films of Ni–Fe. To do this, we used integrated microstrip structures with different widths on identically patterned Ni–Fe cores to act as probes of the internal magnetic field. We verified the accuracy of the field profiles by comparing them with $M$–$H$ loop measurements of the magnetic films.