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Magneto-optical drive
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A magneto-optical drive is a kind of optical disc drive capable of writing and rewriting data upon a magneto-optical disc. 130 mm and 90 mm discs are the most common sizes.
A Magneto-optical disc surface has sector partition rectangles.
A Magneto-optical disc surface has sector partition rectangles.
Visible sectors partition lines on a 130 mm 652 MB magneto-optical disk. (1024 user byte, 17 sectors per track).
Visible sectors partition lines on a 130 mm 652 MB magneto-optical disk. (1024 user byte, 17 sectors per track).
A 130 mm 2.6 GB magneto-optical disc
A 130 mm 2.6 GB magneto-optical disc
A 230 MB Fujitsu 90 mm magneto-optical disc.
A 230 MB Fujitsu 90 mm magneto-optical disc.
Magneto-optic Kerr effect
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In physics the magneto-optic Kerr effect or the surface magneto-optic Kerr effect is one of the magneto-optic effects. It describes the changes to light reflected from a magnetized surface. It is used
Magneto-optical drive
…same. During reading, a laser projects a beam on the disk and, according to the magnetic state of the surface, the reflected light varies due to the magneto-optic Kerr effect. During recording, laser power is increased to heat the material to the Curie point in a single spot. This enables an electromagnet positioned on the…
Several grains of NdFeB with magnetic domains made visible via contrast with a Kerr microscope.
Several grains of NdFeB with magnetic domains made visible via contrast with a Kerr microscope.