Current induced magnetization switching: quasi-static and dynamics

Summary form only given. The direct effect of the current on magnetization reversal is studied with different protocols on various electrodeposited magnetic nanowires of controlled morphology (diameter about 60 nm) (J.-E. Wegrowe et al, J. Appl. Phys. vol. 89, p. 7127, 2001). Three protocols were used: DC current injection, sub-microsecond pulse, and after-effect measurements with nanosecond resolution. The effect of the current in terms of barrier height is quantified (P. Guittienne, IEEE Trans. Mag. vol. 37, p. 2126, 2001). The three protocols are applied to two different structures: uniform Ni nanowires (6000 nm long) and two layer pseudo-spin valves with CPP geometry of Co(30 nm)/Cu(10 nm)/Co(10 nm).