Method and apparatus for storing data using spin-polarized elect

Details Method and apparatus for storing data using spin-polarized elect Method and apparatus for storing data using spin-polarized elect

1998-09-21

2000-11-14

Nelms, David

Static information storage and retrieval

Radiant energy

Electron beam

365121, G11C 1300

Patent

active

061478946

ABSTRACT:
A data storage device including a substrate, a data storage layer on the substrate, and a spin-polarized electron source. The data storage layer comprises a fixed number of atomic layers of a magnetic material which provide the data storage layer with a magnetic anisotropy perpendicular to a surface of the data storage layer. A data magnetic field is created in the data storage layer. The data magnetic field is polarized either in a first direction corresponding to a first data value or in a second direction corresponding to a second data value. Data is stored in the data storage layer by providing a spin-polarized electron having an electron magnetic field with a direction of polarization corresponding to one of the first and the second data values, the electron having a wavelength "characteristic" of unpaired electrons in the data storage layer which cause the magnetic moment of the material, and directing the spin-polarized electron at the data magnetic field to impart the direction of polarization of the electron magnetic field to the data magnetic field. Data is read from the data storage layer by directing the spin-polarized electron at a second wavelength at the data magnetic field and detecting a deflection or attraction of the spin-polarized electron by the data magnetic field. Alternatively, data is read from the data storage layer by directing the spin-polarized electron at the data magnetic field so that the magnetic medium produces a secondary electron and then detecting certain characteristics of the secondary electron.

REFERENCES:
patent: 4985627 (1991-01-01), Gutierrez et al.
patent: 5122663 (1992-06-01), Chang et al.

Affiliated with

Also associated with

Rating

Method and apparatus for storing data using spin-polarized elect does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for storing data using spin-polarized elect, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for storing data using spin-polarized elect will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2071498