Device operating with the displacement of magnetic domain wall
AssigneeU.S. Philips Corporation
InventorFranciscus Hermanus deLeeuw
Life of this patent
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Abstract
A data processing device utilizing magnetizable media operating with the displacement of magnetic domain walls, in particular walls of "bubble" domains, which are propelled by fields which move walls with a speed which is as large as possible, and are operative only for a restricted time, preferably shorter than 20 nanoseconds.
Claims4
A data processing device utilizing magnetizable media operating with the displacement of magnetic domain walls and comprising a layer of a magnetisable material having an easy axis of magnetisation substantially perpendicular to the plane of the layer, means to produce and maintain magnetic domain walls in said layer, and means to produce a magnetic propulsive field to influence magnetic domain walls present in the layer so as to move them between previously determined positions, and means to pulse said propulsive field acting upon a domain wall during the movement having a pulse duration which is shorter than the time in which a function representing the relation between the speed at which the wall moves under the influence of the propulsive field and the time shows a discontinuity.
Dependencies are inferred from the claim text.