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Characterization of Magnetic Properties at Edges by Edge Mode Dynamics

Published

Author(s)

Brian B. Maranville, Robert McMichael, Sudook A. Kim, Ward L. Johnson, C A. Ross, J Cheng

Abstract

We have used trapped spinwave or edge modes of magnetic precession to probe the magnetic environment near magnetic film edges magnetized perpendicular to the edge. Micromagnetic models of dynamics in stripes reveal that the edge mode frequency-field relationship depends on whether the edge surface is vertical or tapered, while the bulk modes are nearly unaffected. The models show the edge mode frequency going to zero at the edge saturation field. This critical field becomes much less distinct for applied fields misaligned from the by as little as 1 degree. Ferromagnetic resonance and Brillouin light scattering measurements of the edge modes in an array of 480 nm wide x 12 nm thick Ni(80)Fe(20) stripes have a lower edge saturation field than the vertical edge models, but agree well with the model of 45 degree tapered edges.
Citation
Journal of Applied Physics
Volume
99

Keywords

edge mode, ferromagnetic resonance, micromagnetic, trapped sinwave

Citation

Maranville, B. , McMichael, R. , Kim, S. , Johnson, W. , Ross, C. and Cheng, J. (2006), Characterization of Magnetic Properties at Edges by Edge Mode Dynamics, Journal of Applied Physics, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=853548 (Accessed May 21, 2024)

Issues

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Created April 20, 2006, Updated October 12, 2021