Current-Induced Magnetization Switching in Seed Optimized Perpendicular Magnetic Tunnel Junctions with Enhanced Spin-Transfer-Torque Efficiency and Uniformity
Abstract:A NiCr film is introduced in magnetic tunnel junction (MTJ) seed layer to improve the smoothness of multilayer and to enhance the perpendicular magnetic anisotropy (PMA) of the pinning layer. Especially motived by the better uniformity of tunneling magnetoresistance (TMR) and switching current density (J c ), the superiority in endurance and data retention for less tailing bits is demonstrated. Benefiting from the higher spin-transfer-torque (STT) efficiency, higher coercivity and lower J c were achieved at th… Show more
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