Patent ID: 7200034
Filing Date: 2007-04-03
Classification: B82Y,G11C,H01L

Abstract:
1. A magnetic memory device comprising: a magnetoresistance effect element; a first write interconnection which is arranged under the magnetoresistance effect element and has a first interconnection layer and a first yoke layer, the first interconnection layer having a portion projecting toward the magnetoresistance effect element, and the first yoke layer including a first region which covers sidewalls of the first interconnection layer, a second region which covers a bottom surface of the first interconnection layer, and third regions which are formed in contact with sidewalls of the projecting portion and magnetically coupled to the first region and second region; and a second write interconnection which is arranged above the magnetoresistance effect element and has a second interconnection layer and a second yoke layer, the second interconnection layer having a portion projecting toward the magnetoresistance effect element, and the second yoke layer including a fourth region which covers sidewalls of the second interconnection layer, a fifth region which covers an upper surface of the second interconnection layer, and sixth regions which are formed in contact with sidewalls of the projecting portion and magnetically coupled to the fourth region and fifth region.