Patent ID: 6211559
Filing Date: 2001-04-03
Classification: B82Y,H01F,H01L

Abstract:
A magnetic tunnel device comprising first and second magnetic tunnel junctions each including a pinned magnetic layer, and an insulating tunnel layer, and sharing a common free magnetic layer stacked in parallel juxtaposition to allow tunneling of electrons through each of the insulating tunnel layers between the pinned layers and the common free magnetic layer, the first and second magnetic tunnel junctions being positioned in parallel juxtaposition so as to form a continuous electron path in series through the magnetic tunnel junction and to provide a cell signal across both the first and second magnetic tunnel junctions greater than a cell signal across each of the magnetic tunnel junctions individually, andwherein both pinned magnetic layers each have a magnetic orientation pointing in substantially the same direction and parallel to each other, andwherein the free magnetic layer has a magnetic oriented in the plane of the free magnetic layer and moveable to be either pointing in the same direction or pointing in the opposite direction to the magnetic orientation of the pinned magnetic layer.