In this paper we study by means of the spin torque model the fast switching behavior of the Co(20 nm)/Cu(5 nm)/Co(2.5 nm) magnetic multilayers of two different cross sections: ellipse (130x70 nm(2)) and ellipse (130x40 nm(2)). Simulations have been performed at zero and room (300 K) temperatures, these point out that the magnetization inversion occurs by nucleation processes in three main steps, for both structures. In particular, for zero temperature the third step of the switching depends on the value of the spin-polarized current. Furthermore, for all of the simulated currents the switching processes are thermally activated and smoother with respect to zero temperature.

Micromagnetic simulations of nanosecond magnetization reversal processes in magnetic nanopillar / Finocchio, G; Carpentieri, Mario; Azzerboni, B; Torres, L; Martinez, E; Lopez Diaz, L.. - In: JOURNAL OF APPLIED PHYSICS. - ISSN 0021-8979. - 99:8(2006). [10.1063/1.2177049]

Micromagnetic simulations of nanosecond magnetization reversal processes in magnetic nanopillar

CARPENTIERI, Mario;
2006-01-01

Abstract

In this paper we study by means of the spin torque model the fast switching behavior of the Co(20 nm)/Cu(5 nm)/Co(2.5 nm) magnetic multilayers of two different cross sections: ellipse (130x70 nm(2)) and ellipse (130x40 nm(2)). Simulations have been performed at zero and room (300 K) temperatures, these point out that the magnetization inversion occurs by nucleation processes in three main steps, for both structures. In particular, for zero temperature the third step of the switching depends on the value of the spin-polarized current. Furthermore, for all of the simulated currents the switching processes are thermally activated and smoother with respect to zero temperature.
2006
Micromagnetic simulations of nanosecond magnetization reversal processes in magnetic nanopillar / Finocchio, G; Carpentieri, Mario; Azzerboni, B; Torres, L; Martinez, E; Lopez Diaz, L.. - In: JOURNAL OF APPLIED PHYSICS. - ISSN 0021-8979. - 99:8(2006). [10.1063/1.2177049]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11589/7241
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