Write head with a micro coil for magneto-optical data storage

To increase storage capacity, an advanced magneto-optical recording technology using high numerical aperture (NA) optics (NA>0.8) in combination with a micro coil creating a local magnetizing field has been investigated. For data recording, a beam of blue laser light locally heats up the magneto-...

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Bibliographic Details
Published in:IEEE transactions on magnetics 2004-07, Vol.40 (4), p.3207-3209
Main Authors: Amor, A.B., Ruffert, C., Knappmann, S., Gatzen, H.H.
Format: Article
Language:English
Subjects:
Apertures
Coils
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Disk recording
Exact sciences and technology
Laser beams
Lenses
Magnetic fields
Magnetic heads
Magnetic properties and materials
Magnetism
Magnetooptic recording
Memory
Optical recording
Physics
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Summary:To increase storage capacity, an advanced magneto-optical recording technology using high numerical aperture (NA) optics (NA>0.8) in combination with a micro coil creating a local magnetizing field has been investigated. For data recording, a beam of blue laser light locally heats up the magneto-optical storage layer, which is then magnetized by the micro coil. The micro coil therefore needs to be located at a very small working distance (
ISSN:0018-9464
1941-0069
DOI:10.1109/TMAG.2004.829183