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Published July 2001 | Published
Journal Article Open

Recording processes in perpendicular patterned media using longitudinal magnetic recording heads


An experimental study of the recording processes in patterned magnetic media is presented. The reading of patterned media using spin-valve elements is compared to the signal levels from magneto-resistive sensors. Writing and reading of patterned columnar media at high areal densities is demonstrated. A new experimental technique has been developed that allows precise determination of the location of the write gap poles with respect to the patterned media column during the write process. Implications for patterned media write synchronization and the write head field requirements are discussed.

Additional Information

© 2001 IEEE. Reprinted with permission. Manuscript received July 18, 2000. This work was supported by the National Science Foundation (MRSEC) Grant DMR-94-00439 and the Army Research Office. The authors would like to thank IBM Storage Systems Division for the MR and Spin-Valve heads used in this report. Special issue: SELECTED PAPERS FROM THE EIGHTH JOINT MAGNETISM AND MAGNETIC MATERIALS — INTERNATIONAL MAGNETICS CONFERENCE (MMM–INTERMAG), San Antonio, TX, 7–11 January 2001. IEEE Transactions on Magnetics, 37(4) Parts 1-2, July 2001.

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