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Title: Ultra-thin vertical magneto-optical media and system for using same

Abstract

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.

Inventors:
;
Publication Date:
Research Org.:
Argonne National Lab., IL (USA)
Sponsoring Org.:
DOE/ER
OSTI Identifier:
6706666
Patent Number(s):
PATENTS-US-A7357246
Application Number:
ON: DE90014589; PPN: US 7-357246
Assignee:
Dept. of Energy
DOE Contract Number:  
W-31109-ENG-38
Resource Type:
Patent Application
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; 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

Citation Formats

Bader, S D, and Liu, Chian. Ultra-thin vertical magneto-optical media and system for using same. United States: N. p., 1989. Web.
Bader, S D, & Liu, Chian. Ultra-thin vertical magneto-optical media and system for using same. United States.
Bader, S D, and Liu, Chian. 1989. "Ultra-thin vertical magneto-optical media and system for using same". United States.
@article{osti_6706666,
title = {Ultra-thin vertical magneto-optical media and system for using same},
author = {Bader, S D and Liu, Chian},
abstractNote = {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.},
doi = {},
url = {https://www.osti.gov/biblio/6706666}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1989},
month = {5}
}