Scanning magnetoresistance microscopy (SMRM) as a diagnostic for high density recording

Author

Yamamoto, S.Y. ; Schultz, S. ; Zhang, Yun ; Bertram, H. Neal

Author_Institution

Dept. of Phys., California Univ., San Diego, La Jolla, CA, USA

Volume

33

Issue

1

fYear

1997

fDate

1/1/1997 12:00:00 AM

Firstpage

891

Lastpage

896

Abstract

Scanning Magneto-Resistance Microscopy (SMRM) is a technique which we have developed whereby commercial magneto-resistive (MR) heads are used to both image and record magnetic media. A high resolution, linearized positioning stage is used to raster-scan the recording media (either a hard disk platter or tape coupon) with respect to the MR read/inductive write head. The scanning is performed with the slider in physical contact with the media. Thermal asperities are not present since the contact is continuous rather than intermittent, and the scan speed is slow. This report describes the SMRM hardware, and SMRM measurements of isolated transitions from two different types of MR heads are analyzed and compared to corresponding spin stand data

Keywords

digital magnetic recording; hard discs; magnetic heads; magnetic tape storage; magnetic tapes; magnetic variables measurement; magnetoresistance; magnetoresistive devices; microscopy; MR read/inductive write head; diagnostic tool; high density recording; high resolution positioning stage; linearized positioning stage; magnetoresistive heads; raster-scanning; recording media; scanning magnetoresistance microscopy; Disk recording; Electronic mail; Hard disks; Instruments; Magnetic force microscopy; Magnetic heads; Magnetic recording; Magnetoresistance; Perpendicular magnetic recording; Physics;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.560127

Filename

560127