A method of forming a magnetic transition pattern in a magnetic material by contact
printing comprises steps of providing a stacked assembly including a workpiece
including a surface comprised of the magnetic material including a plurality of
initialized, unidirectionally aligned magnetic domains, and a high saturation magnetization
stamper having an imprinting surface in intimate contact with the workpiece surface,
the imprinting surface comprising a plurality of projections and depressions arranged
in a pattern corresponding to the magnetic transition pattern to be formed in the
magnetic material, and selectively magnetically re-aligning the initialized, unidirectionally
aligned magnetic domains by placing the assembly in a fixed gap contact printing
apparatus including a magnet means having a pair of spaced-apart, stationary magnetic
poles providing an oppositely directed, uniform intensity, unidirectional re-alignment
magnetic field.