Magneto-optic recording materials with direct overwrite capability

The possibility of achieving direct overwrite capability in magneto-optic thin films is demonstrated. By using films having a compensation temperature tens of degrees higher than the ambient temperature, the demagnetizing field can effectively be used as a bias field for thermomagnetic writing in wh...

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Bibliographic Details
Published in:Applied physics letters 1986, Vol.49 (8), p.473-474
Main Authors: SHIEH, H.-P. D, KRYDER, M. H
Format: Article
Language:English
Subjects:
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Imaging and optical processing
Optics
Physics
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Summary:The possibility of achieving direct overwrite capability in magneto-optic thin films is demonstrated. By using films having a compensation temperature tens of degrees higher than the ambient temperature, the demagnetizing field can effectively be used as a bias field for thermomagnetic writing in which writing and erasing of domains are accomplished in the absence of a magnetic field. A read-before-write scheme is proposed to facilitate the write/erase laser trigger signal to perform overwriting in real time.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.97120