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Title:
PROCESSING SCHEME FOR DOMAIN EXPANSION ROM MEDIA
Document Type and Number:
WIPO Patent Application WO2004040565
Kind Code:
A3
Abstract:
The present invention relates to a domain expansion storage medium and processing method for processing a storage medium to obtain an improved readout performance. The magnetic properties of a storage layer (50) of the storage medium are altered by an ion beam projection lithography using a stencil mask to define magnetic domains and/or track patterns and/or servo patterns. Thereby, replication accuracy, speed and readout performance can be improved.

Inventors:
PHILLIPS GAVIN N (NL)
Application Number:
PCT/IB2003/004443
Publication Date:
December 02, 2004
Filing Date:
October 07, 2003
Export Citation:
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Assignee:
KONINKL PHILIPS ELECTRONICS NV (NL)
PHILLIPS GAVIN N (NL)
International Classes:
G11B5/84; G11B11/05; G11B11/105; (IPC1-7): G11B11/105; G11B5/84
Domestic Patent References:
WO1999035657A11999-07-15
Foreign References:
US5993937A1999-11-30
Other References:
DIETZEL A ET AL: "ION PROJECTION DIRECT STRUCTURING FOR PATTERNING OF MAGNETIC MEDIA", IEEE TRANSACTIONS ON MAGNETICS, IEEE INC. NEW YORK, US, vol. 38, no. 5, September 2002 (2002-09-01), pages 1952 - 1954, XP001131524, ISSN: 0018-9464
TERRIS B D ET AL: "PATTERNING MAGNETIC FILMS BY ION BEAM IRRADIATION", JOURNAL OF APPLIED PHYSICS, AMERICAN INSTITUTE OF PHYSICS. NEW YORK, US, vol. 87, no. 9, 1 May 2000 (2000-05-01), pages 7004 - 7006, XP000954174, ISSN: 0021-8979
PATENT ABSTRACTS OF JAPAN vol. 0135, no. 70 (P - 977) 18 December 1989 (1989-12-18)
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