Patent ID: 8559214
Filing Date: 2013-10-15
Classification: G11C,H01L

Abstract:
1. A magnetic memory device comprising: a magnetization record layer which is a ferromagnetic layer having a perpendicular magnetic anisotropy; and a magnetic tunnel junction section used to read data from said magnetization record layer, wherein said magnetization record layer is provided with a plurality of domain wall motion regions, wherein said magnetization record layer comprises: (N+1) magnetization fixed regions (N is a natural number equal to or more than 2) of a 0 N domain wall motion regions of a first domain wall motion region to an Nth domain wall motion region which have invertible magnetization directions and in which a domain wall is movable, and wherein one of said N domain wall motion regions is connected between every adjacent two of said 0th magnetization fixed region to said Nth magnetization fixed region which are arranged in order.