Title :
In situ ultra-high resolution magnetic imaging
Author :
Companieh, Amir Ali ; Eaton, Robert ; Indeck, Ronald ; Moser, Michael
Author_Institution :
Magnetic & Inf. Sci. Center, Washington Univ., St. Louis, MO, USA
fDate :
7/1/2001 12:00:00 AM
Abstract :
A method of ultra-high resolution magnetic imaging in situ to the drive has been developed. Enhanced magnetization images are produced through deconvolution of the linearized readback by a synthesized two-dimensional head response kernel. The technique first linearizes the measured output by removing the nonlinear GMR head transfer curve. In situ deconvolved images are correlated with conventional MFM (scanning probe-tip) images. After deconvolution, one can readily obtain two-dimensional images with sub-30 nm resolution
Keywords :
deconvolution; image resolution; linearisation techniques; magnetic heads; magnetic recording; magnetic variables measurement; MFM scanning probe-tip images; enhanced magnetization images; in situ deconvolved images; in situ ultra-high resolution magnetic imaging; linearized readback deconvolution; magnetic recording system; measured output linearization; nonlinear GMR head transfer curve; nonlinearity cancellation; synthesized two-dimensional head response kernel; two-dimensional images; Deconvolution; Image resolution; Kernel; Low pass filters; Magnetic field measurement; Magnetic flux; Magnetic heads; Magnetization; Signal resolution; Voltage;
Journal_Title :
Magnetics, IEEE Transactions on
