Magnetic domain expansion readout for amplification of an ultra high density magneto-optical recording signal

An amplified magneto-optical signal readout by using a dynamic domain expansion effect has been proposed and experimentally confirmed. Small domains of around 0.3 μm in diameter were expanded by a pulsed external field on the readout layer copied from the recording layer. An amplified readout signal...

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Bibliographic Details
Published in:Applied physics letters 1996-12, Vol.69 (27), p.4257-4259
Main Authors: Awano, Hiroyuki, Ohnuki, Satoru, Shirai, Hiroshi, Ohta, Norio, Yamaguchi, Atushi, Sumi, Satoshi, Torazawa, Kenji
Format: Article
Language:English
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Summary:An amplified magneto-optical signal readout by using a dynamic domain expansion effect has been proposed and experimentally confirmed. Small domains of around 0.3 μm in diameter were expanded by a pulsed external field on the readout layer copied from the recording layer. An amplified readout signal up to three times larger than that of the original one has been achieved.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.116963