Close shaped magnetic multi-layer film comprising or not...

Details Close shaped magnetic multi-layer film comprising or not... Close shaped magnetic multi-layer film comprising or not...

2011-05-03

2011-05-03

Dinh, Son (Department: 2824)

Static information storage and retrieval

Systems using particular element

Magnetic thin film

C365S158000, C365S066000, C365S055000, C365S173000, C365S225500, C257S421000

Reexamination Certificate

active

07936595

ABSTRACT:
Each layer in the magnetic multilayer film is a closed ring or oval ring and the magnetic moment or flux of the ferromagnetic film in the magnetic unit is in close state either clockwise or counterclockwise. A metal core is put in the geometry center position in the close-shaped magnetic multilayer film. The cross section of the metal core is a corresponding circular or oval. A MRAM is made of the closed magnetic multilayer film with or without a metal core. The close-shaped magnetic multilayer film is formed by micro process method. The close-shaped magnetic multilayer film can be used broadly in a great variety of device that uses a magnetic multilayer film as the core, such as MRAM, magnetic bead in computer, magnetic sensitive sensor, magnetic logic device and spin transistor.

REFERENCES:
patent: 5541868 (1996-07-01), Prinz
patent: 2003/0123280 (2003-07-01), Brown
patent: 2004/0166640 (2004-08-01), Yagami et al.
patent: 2004/0213039 (2004-10-01), Kawabata et al.
patent: 1381909 (2002-11-01), None
patent: 1617257 (2005-05-01), None

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