Dynamic magnetic information storage or retrieval – Head – Core
Reexamination Certificate
2011-05-24
2011-05-24
Blouin, Mark (Department: 2627)
Dynamic magnetic information storage or retrieval
Head
Core
Reexamination Certificate
active
07948710
ABSTRACT:
In a heat-assisted magnetic recording, a thin-film magnetic head, which can form stable recording bits pattern having steep magnetization transition regions without using a near-field light generating element, is provided. The head is formed on an element forming surface of a substrate, and has a waveguide for leading a light for heat-assist to a magnetic medium and a write element formed on a trailing side of the waveguide and having a magnetic pole for applying a write field to the medium. Here, a write field profile, which is an intensity distribution of the write field from the pole along a track in a recoding layer of the medium, has a projecting region on a leading side. Further, an anisotropy field profile, which is a distribution of an anisotropy field when the anisotropy field is reduced by irradiating the light on a part of the recoding layer, traverses the projecting region.
REFERENCES:
patent: 6768556 (2004-07-01), Matsumoto et al.
patent: 2006/0222904 (2006-10-01), Hsia et al.
patent: 2008/0218891 (2008-09-01), Gubbins et al.
patent: 2009/0040644 (2009-02-01), Lu et al.
patent: A-10-162444 (1998-06-01), None
patent: A-2000-207702 (2000-07-01), None
patent: A-2003-534622 (2003-11-01), None
patent: A-2004-158067 (2004-06-01), None
patent: A-2005-4901 (2005-01-01), None
patent: A-2005-190655 (2005-07-01), None
patent: WO 01/91114 (2001-11-01), None
Miyanishi et al., “Near-Field Assisted Magnetic Recording” IEEE Transactions on Magnetics, vol. 41, No. 10, pp. 2817-2821; Oct. 2005.
Thiele et al., “Temperature dependent magnetic properties of highly chemically ordered Fe55-xNixPt45L10films” Journal of Applied Physics, vol. 91, No. 10, pp. 6595-6600, May 15, 2002.
Kurihara Katsuki
Miyauchi Daisuke
Shimazawa Koji
Blouin Mark
Oliff & Berridg,e PLC
TDK Corporation
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