Ferromagnetic memory based on torroidal elements

Details Ferromagnetic memory based on torroidal elements Ferromagnetic memory based on torroidal elements

1997-10-23

1999-07-13

Fears, Terrell W.

Static information storage and retrieval

Systems using particular element

Magnetic thin film

365 92, G11C 1300

Patent

active

059235837

ABSTRACT:
A magnetic memory cell for storing binary encoded data and a memory constructed from these memory cells. The memory cell stores information in the direction of magnetization of a torroidal layer of magnetic material. The memory cell is constructed from a structure having a top electrode, a soft layer which includes a planar sheet of a soft magnetic material, a hard layer which includes a planar sheet of a hard magnetic material, and a bottom electrode, the soft and hard layers being sandwiched between the top and bottom electrodes. The various layers are torroids. The hard and soft materials are chosen such that the magnitude to the magnetic field needed to magnetize the hard magnetic material is greater than the magnitude of the magnetic field needed to magnetize the soft magnetic material. The memory cell also includes a write circuit that generates first and second magnetic fields. The first is generated by passing a current between the top and bottom electrodes of a memory cell in a direction that determines the data state to be written. The magnitudes of the first and second magnetic fields are less than that needed to magnetize the soft magnetic material. However, the magnitude of the vector sum of the first and second magnetic fields is greater than the magnetic field needed to magnetize the soft magnetic material but less than the magnetic field needed to magnetize the hard magnetic material.

REFERENCES:
patent: 4903343 (1990-02-01), Cope et al.

Affiliated with

Also associated with

Rating

Ferromagnetic memory based on torroidal elements does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Ferromagnetic memory based on torroidal elements, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ferromagnetic memory based on torroidal elements will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2282823