There are provided a first reference layer, in which a direction of magnetization is fixed, and a storage layer including a main body, in which a length in an easy magnetization axis direction is longer than a length in a hard magnetization axis direction, and a projecting portion provided to a central...http://www.google.com.au/patents/US6949779?utm_source=gb-gplus-sharePatent US6949779 - Magnetoresistive element and magnetic memory
