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Ferromagnetic resonance imaging of Co films using magnetic resonance force microscopy

Suh, B. J. and Hammel, P. C. and Zhang, Z. and Midzor, M. M. and Roukes, M. L. and Childress, J. R. (1998) Ferromagnetic resonance imaging of Co films using magnetic resonance force microscopy. Journal of Vacuum Science and Technology B, 16 (4). pp. 2275-2279. ISSN 1071-1023. doi:10.1116/1.590161.

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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.

Item Type:Article
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Roukes, M. L.0000-0002-2916-6026
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.
Funding AgencyGrant Number
Los Alamos National LaboratoryUNSPECIFIED
Department of Energy (DOE)UNSPECIFIED
Subject Keywords:COBALT, THIN FILMS, FERROMAGNETIC RESONANCE, IMAGES, FERRITE GARNETS, MAGNETIC FIELDS, magnetic thin films, magnetic force microscopy
Issue or Number:4
Record Number:CaltechAUTHORS:SUHjvstb98
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:12170
Deposited By: Archive Administrator
Deposited On:28 Oct 2008 00:10
Last Modified:08 Nov 2021 22:26

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