Micromagnetics Simulation of Asymmetric Pseudo-Spin Valve Dots

Published

January 1, 2002

Author(s)

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

Abstract

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

Volume

731

Conference Dates

April 1-5, 2002

Conference Location

San Francisco, CA, USA

Conference Title

Materials Research Society

Pub Type

Conferences

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Keywords

magnetization reversal, micromagnetics, MRAM, spin valves

Citation

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], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=50988 (Accessed October 15, 2025)