Ferromagnetic resonance imaging of Co films using magnetic resonance force microscopy
Abstract
Lateral one-dimensional imaging of cobalt (Co) films by means of microscopic ferromagnetic resonance (FMR) detected using the magnetic resonance force microscope (MRFM) is demonstrated. A novel approach involving scanning a localized magnetic probe is shown to enable FMR imaging in spite of the broad resonance linewidth. We introduce a spatially selective local field by means of a small, magnetically polarized spherical crystallite of yttrium iron garnet (YIG). Using MRFM-detected FMR signals from a sample consisting of two Co films, we can resolve the ∼20 μm lateral separation between the films. The results can be qualitatively understood by consideration of the calculated spatial profiles of the magnetic field generated by the YIG sphere.
Additional Information
©1998 American Vacuum Society. Received 21 January 1998; accepted 21 May 1998. Work at Los Alamos National Laboratory was performed under the auspices of the U.S. Department of Energy. One of us (Z.Z.) acknowledges the support of the Center for Nonlinear Studies at Los Alamos National Laboratory.Attached Files
Published - SUHjvstb98.pdf
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Additional details
- Eprint ID
- 12170
- Resolver ID
- CaltechAUTHORS:SUHjvstb98
- Los Alamos National Laboratory
- Department of Energy (DOE)
- Created
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2008-10-28Created from EPrint's datestamp field
- Updated
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2021-11-08Created from EPrint's last_modified field