Two-dimensional spectroscopic imaging of individual ferromagnetic nanostripes

Han-Jong Chia, Feng Guo, L. M. Belova, and R. D. McMichael
Phys. Rev. B 86, 184406 – Published 6 November 2012

Abstract

We use ferromagnetic-resonance force microscopy to spectroscopically image the edge modes in individual 700 nm and 400 nm wide Permalloy stripes with a spatial resolution on the order of 200 nm. The imaging clearly identifies some resonances as edge modes in stripes in a case where mode identification by comparison with micromagnetic modeling is not clear. Combined spectroscopic and spatial scans reveal clear differences in the edge mode resonances at opposite edges of the stripes as well as inhomogeneity along the length of the stripe.

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  • Received 31 May 2012

DOI:https://doi.org/10.1103/PhysRevB.86.184406

©2012 American Physical Society

Authors & Affiliations

Han-Jong Chia1,2,*, Feng Guo1,2, L. M. Belova3, and R. D. McMichael1,†

  • 1Center for Nanoscale Science and Technology, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA
  • 2Maryland Nanocenter, University of Maryland, College Park, Maryland 20742, USA
  • 3Department of Materials Science and Engineering, Royal Institute of Technology, 10044 Stockholm, Sweden

  • *Current address: Everspin Technologies, Inc., Chandler AZ, USA.
  • robert.mcmichael@nist.gov

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Issue

Vol. 86, Iss. 18 — 1 November 2012

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