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

Volume

37

Issue

4

fYear

2001

fDate

7/1/2001 12:00:00 AM

Firstpage

1257

Lastpage

1259

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;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.950811

Filename

950811