International Conference on Solid State Devices and Materials

A new method for suppression of magnetic domain wall shift error in 3D magnetic domain-wall memory is proposed, which utilizes the spatially modulated perpendicular magnetic anisotropy (PMA) of magnetic layers that are deposited on the side walls of multilayers of different oxide materials. We experimentally identified the oxide material candidates for such implementation, and found that CrO_x can generate the largest PMA while GdO_x generates the smallest PMA of Pt/Co/Pt multilayers. Our proposed structure can be a key to realize 3D magnetic domain-wall racetrack memory with low bit-shift error.