Magneto-optical memory element

Details Magneto-optical memory element Magneto-optical memory element

1981-05-27

1984-03-20

Dixon, Jr., William R.

Static information storage and retrieval

Information masking

Polarization

252 6255, 350376, 427132, 428692, 428900, G11C 1306

Patent

active

044385080

ABSTRACT:
A magneto-optical memory element consisting of a substrate, provided with an amorphous layer of an alloy of a rare-earth metal and a transition metal. The layer has a uniaxial magnetic anisotropy. Such memory elements are suitable for storing digital information in the form of magnetized areas, the magnetization direction of which can be read by means of the Kerr effect or Faraday effect. By adding bismuth and/or tin to the alloy the Kerr rotation and Faraday rotation can each be increased considerably, so that simpler reading of the stored information is possible.

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