Patent ID: 7710769
Filing Date: 2010-05-04
Classification: G11C,Y10S

Abstract:
1. A magnetic memory device comprising: a plurality of data-carrying nanowires made of magnetic material and extending in a first direction crossed by a plurality of data-clocking nanowires also made of magnetic material and extending in a second direction, collectively forming a network of cross junctions; a data read-in part arranged adjacent to respective data read-in portions of the data-carrying nanowires and operable to nucleate magnetic domains with domain walls of pre-determined chirality in the data-carrying nanowires, wherein the chirality of the domain walls encodes the data to be stored; a magnetic field source operable to generate a clocking field that alternates between alignment and anti-alignment with the data-clocking nanowires, which serves to move the data-carrying domain walls along the data-carrying nanowires from one cross junction to the next by successively releasing the data-carrying domain walls from the cross junctions where they are pinned and causing them to move to said next cross junction where they are pinned again; and a data read-out part arranged adjacent to respective data read-out portions of the data-carrying nanowires and operable to sense the chirality of the domain walls in said data read-out portions.