Magnetic domain device

摘要

A magnetic device comprising at least one thin layer of a magnetizable material which has an easy axis of magnetization approximately normal to the surface of the layer. Magnetic domains are propagated in the layer by a rotating magnetic field in co-operation with a pattern of magnetizable material on the layer. Domains are detected by passing a current through a pattern of magneto-resistive material on the layer. At least in the part of the device where the detection occurs, the propagation and detection patterns have substantially the same configuration and one pattern is situated between the layer of magnetizable material and the other pattern.