ITE Technical Report
Online ISSN : 2424-1970
Print ISSN : 1342-6893
ISSN-L : 1342-6893
25.25
Session ID : MMS2001-24
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MAMMOS Readout with DC Magnetic Field
Hiroki IshidaHitoshi NoguchiAtsushi YamaguchiNaoyuki TakagiKen-ichiro MitaniMinoru Kume
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CONFERENCE PROCEEDINGS FREE ACCESS

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Abstract

A new type of MAMMOS(Magnetic AMplifying Magneto-Optical System)was proposed. This method needs only a DC magnetic field for expanding and erasing the magnetic domains and RE(Rare-Earth)-rich GdFeCo was used for readout layer. In this system, 43dB of CNR was obtained for 0.25μm packed domains by applying 10kA/m of DC magnetic field. Compared with the conventional CAD(Center Aperture Detection)disk, CNR for the domains smaller than 0.4μm was improved. This method exhibited a high readout resolution in spite of an AC field-free method.

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© 2001 The Institute of Image Information and Television Engineers
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