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Micromagnetics Simulation of Asymmetric Pseudo-Spin Valve Dots



N Dao, C A. Ross, F J. Castano, Michael J. Donahue, S L. Whittenburg


We present our recent simulation results for Ni79Fe21 (5 nm)/Cu (3 nm)/Co (4nm) pseudo-spin valves. These simulations have been conducted on several different aspect ratios of rectangular dots. Distinct switches of the two magnetic layers were observed. At smaller aspect ratios, magnetization reversal proceeds through a leaf state in the soft layer and a flower state in the hard layer. For larger aspect ratios, reversal proceeds by nucleation and annihilation of a domain wall. Our simulations show a reasonable agreement with the experimental results. Differences between the experimental and simulation results are discussed.
Proceedings Title
Proceedings of the 2002 Materials Research Society Spring Meeting
Conference Dates
April 1-5, 2002
Conference Location
San Francisco, CA, USA
Conference Title
Materials Research Society


magnetization reversal, micromagnetics, MRAM, spin valves


Dao, N. , Ross, C. , Castano, F. , Donahue, M. and Whittenburg, S. (2002), Micromagnetics Simulation of Asymmetric Pseudo-Spin Valve Dots, Proceedings of the 2002 Materials Research Society Spring Meeting, San Francisco, CA, USA, [online], (Accessed July 20, 2024)


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Created December 31, 2001, Updated October 12, 2021