Examination of newly developed metal particle media for >3 gb/in/sup 2/ recording in GMR-based tape systems

New metal particle (MP) media was developed for use with giant magnetoresistive (GMR) heads. We confirmed the capability of constructing a helical scan magnetic recording system exceeding 3 Gb/in/sup 2/ recording density, because of sufficient signal-to-noise ratio (SNR) under test conditions at 6.7...

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Veröffentlicht in:	IEEE transactions on magnetics 2005-10, Vol.41 (10), p.3235-3237
Hauptverfasser:	Sekiguchi, N., Kawakami, K., Ozue, T., Yamaga, M., Onodera, S.
Format:	Artikel
Sprache:	eng
Schlagworte:	Anisotropic magnetoresistance Areal recording density Coatings Electrostatic discharge Giant magnetoresistance Magnetic heads Magnetic materials Magnetic recording metal particle (MP) tape partial abrasive Rough surfaces spin-valve head Surface roughness Testing
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Beschreibung
Zusammenfassung:	New metal particle (MP) media was developed for use with giant magnetoresistive (GMR) heads. We confirmed the capability of constructing a helical scan magnetic recording system exceeding 3 Gb/in/sup 2/ recording density, because of sufficient signal-to-noise ratio (SNR) under test conditions at 6.74 Gb/in/sup 2/ of read-track-base calculations with the media (magneticlayerthickness=50 nm, magneticparticlesize=45 nm, and surfaceroughness Ra=1.8 nm). Low media partial-abrasive properties are incorporated to avoid excessive head gap material wear.
ISSN:	0018-9464 1941-0069
DOI:	10.1109/TMAG.2005.855246