Magnetic domain device

Details Magnetic domain device Magnetic domain device

G - Physics

11

C

352/37.2

G11C 11/14 (2006.01) G11C 19/08 (2006.01) H01F 10/06 (2006.01)

Patent

CA 1114950

ABSTRACT: A magnetic device comprising at least one thin layer of a magnetizable material which shows an easy axis of magnetization which is substantially normal to the surface of the layer. Magnetic domains are propagated in the layer. The propagation occurs under the influence of a bipolar current, for example an alternating current, through a pattern of electrically conductive material with which the layer is provided. Means are furthermore present which cause an asymmetry force and thus determined in which direction the domains are propagated. The pattern and the elements are present in a single configuration which is constructed from at least a layer of magnetic material. In a first case one layer is present in the configuration consisting of electrically conductive soft-magnetic material. In the second case the configuration comprises a layer of electrically conductive material and a layer of soft-magnetic material. In a third case-the configuration comprises a layer of electrically conductive material and a layer of permanent magnetizable material, which latter causes an asymmetry force in the magnetized state.

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