Ultra-thin vertical magneto-optical media and system for using same
A high density information storage medium utilizing the properties of an ultrathin film. The present invention includes an information storage medium comprised of an ultrathin film capable of possessing vertical magnetic orientation. The present invention also includes methods for the storage to, retrieval of and erasure of data on the ultrathin film medium. Storage of data on the ultrathin film medium utilizes the temperature dependent magnetic coercivity of the ultrathin film medium. The retrieval of information from the ultrathin film medium is based on the Kerr effect property of the ultrathin film and employs detection of the rotation of a beam of polarized light. The invention also includes the beneficial utilization of the reflection of the laser from the underlying metallic substrate back through the magnetic film to enhance the rotation and reflectivity characteristics of the signal. 6 figs.
- Research Organization:
- Argonne National Lab., IL (USA)
- Sponsoring Organization:
- DOE/ER
- DOE Contract Number:
- W-31109-ENG-38
- Assignee:
- Dept. of Energy
- Patent Number(s):
- PATENTS-US-A7357246
- Application Number:
- ON: DE90014589; PPN: US 7-357246
- OSTI ID:
- 6706666
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE
MAGNETIC STORAGE DEVICES
DESIGN
THIN FILM STORAGE DEVICES
CAPACITY
INFORMATION RETRIEVAL
INVENTIONS
MAGNETIC DIPOLES
THIN FILMS
DIPOLES
FILMS
MEMORY DEVICES
MULTIPOLES
420200* - Engineering- Facilities
Equipment
& Techniques
990300 - Information Handling