A unique system of Fe/Pd for magneto-optical recording and magnetic switching devices

Patent Application · Tue May 22 00:00:00 EDT 1990

OSTI ID:5129378

Liu, Chian Q; Bader, S D

This invention is comprised of a high density magneto-optical information storage medium utilizing the properties of an ultrathin iron film on a palladium substrate. The present invention comprises a magneto-optical medium capable of thermal and magnetic stability and capable of possessing a vertical orientation of the magnetization vector for the magnetic material. Data storage relies on the temperature dependence of the coercivity of the ultrathin film. Data retrieval derives from the Kerr effect which describes the direction of rotation of a plane of polarized light traversing the ultrathin magnetic material as a function of the orientation of the magnetization vector.

• Research Organization: Argonne National Lab., IL (United States)
• Sponsoring Organization: USDOE; USDOE, Washington, DC (United States)
• DOE Contract Number: W-31109-ENG-38
• Assignee: Dept. of Energy
• Patent Number(s): PATENTS-US-A7526915
• Application Number: ON: DE92017177; PPN: US 7-526915
• OSTI ID: 5129378
• Country of Publication: United States
• Language: English

Related Subjects

99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE
36 MATERIALS SCIENCE
IRON
MAGNETIC PROPERTIES
MAGNETIC STORAGE DEVICES
MATERIALS
PALLADIUM
LAYERS
MAGNETO-OPTICAL EFFECTS
OPTICAL PROPERTIES
SUBSTRATES
THIN FILMS
ELEMENTS
FILMS
MEMORY DEVICES
METALS
PHYSICAL PROPERTIES
PLATINUM METALS
TRANSITION ELEMENTS
990200* - Mathematics & Computers
360104 - Metals & Alloys- Physical Properties