Magnetic domain expansion readout for an ultra high density MO recording

An advanced readout technique using a dynamic domain expansion phenomenon has been proposed and investigated. Very small domains of 0.08 /spl mu/m which achieve an areal density of 20 Gb/in/sup 2/ (CD single side 30 GB with 680 nm laser) expand during readout, causing the readout signal to increase...

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Bibliographic Details
Published in:IEEE transactions on magnetics 1997-09, Vol.33 (5), p.3214-3216
Main Authors: Awano, H., Ohnuki, S., Shirai, H., Ohta, N., Yamaguchi, A., Sumi, S., Torazawa, K.
Format: Article
Language:English
Subjects:
Magnetic domains
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Summary:An advanced readout technique using a dynamic domain expansion phenomenon has been proposed and investigated. Very small domains of 0.08 /spl mu/m which achieve an areal density of 20 Gb/in/sup 2/ (CD single side 30 GB with 680 nm laser) expand during readout, causing the readout signal to increase to the same level as for a 0.6 /spl mu/m domain.
ISSN:0018-9464
1941-0069
DOI:10.1109/20.617895