Please use this identifier to cite or link to this item: https://doi.org/10.1109/TMAG.2004.832379
Title: Micromagnetic study of switching in ring-shaped spin valve structures
Authors: Guo, J. 
Jalil, M.B.A. 
Keywords: Current-induced switching
Spin torque
Spin valve
Vertical mram
Issue Date: Jul-2004
Source: Guo, J., Jalil, M.B.A. (2004-07). Micromagnetic study of switching in ring-shaped spin valve structures. IEEE Transactions on Magnetics 40 (4 II) : 2122-2124. ScholarBank@NUS Repository. https://doi.org/10.1109/TMAG.2004.832379
Abstract: In this paper, we present a micromagnetic simulation of magnetization reversal in a ring-shaped pseudo-spin valve (PSV), consisting of a storage layer made of permalloy (3 nm), a pinned layer of Co (3 nm), and a Cu spacer layer (3 nm). The transition between the two vortex stable states of the storage layer is modeled by applying a write current pulse. This pulse generates an Oersted field and an effective exchange field due to spin torque. The switching mechanism is investigated for different amplitude and duration of the current pulse, and the conditions for the desired switching behavior is discussed. Ideal switching behavior is obtained for a write pulse of at least 3 ns.
Source Title: IEEE Transactions on Magnetics
URI: http://scholarbank.nus.edu.sg/handle/10635/70932
ISSN: 00189464
DOI: 10.1109/TMAG.2004.832379
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