In situ ultra-high resolution magnetic imaging

A method of ultra-high resolution magnetic imaging in situ to the drive has been developed. Enhanced magnetization images are produced through deconvo lution of the linearized read-back by a synthesized two-dimensional head re sponse kernel. The technique first linearizes the measured output by removi ng the nonlinear GMR head transfer curve. In situ deconvolved images are co rrelated with conventional MFM (scanning probe-tip) images. After deconvolu tion, one can readily obtain two-dimensional images with sub-30 nm resoluti on.