Low noise perpendicular magnetic recording media for deep submicron track width recording

Noise reduction in double-layered perpendicular recording media with a thick soft magnetic backlayer was studied. Although the medium noise was increased with the backlayer, the noise for quaternary alloy films could be substantially reduced by introducing a certain intermediate layer between the al...

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Veröffentlicht in:	IEEE transactions on magnetics 2000-09, Vol.36 (5), p.2414-2416
Hauptverfasser:	Honda, N., Ariake, J., Yamakawa, K., Ouchi, K., Iwasaki, S.-I.
Format:	Artikel
Sprache:	eng
Schlagworte:	Condensed matter: electronic structure, electrical, magnetic, and optical properties Demagnetization Density Exact sciences and technology Low noise Magnetic films Magnetic heads Magnetic noise Magnetic properties Magnetic properties and materials Magnetic recording Magnetic recording materials Magnetic storage Magnetism Noise Noise reduction Perpendicular magnetic recording Physics Poles Recording Soft magnetic materials Studies of specific magnetic materials Voltage Waveforms
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Beschreibung
Zusammenfassung:	Noise reduction in double-layered perpendicular recording media with a thick soft magnetic backlayer was studied. Although the medium noise was increased with the backlayer, the noise for quaternary alloy films could be substantially reduced by introducing a certain intermediate layer between the alloy layer and the backlayer. The double-layered medium obtained exhibited a waveform with sharp transitions as well as a low noise property when recorded with a single pole head. The recording performances suggested the potential of the medium for a high areal density recording around 50 Gbit/in/sup 2/.
ISSN:	0018-9464 1941-0069
DOI:	10.1109/20.908450