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Phys. Rev. B 74, 144424 (2006) [6 pages]

Ferromagnetic resonance force microscopy studies of arrays of micron size permalloy dots

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T. Mewes1,2,*, J. Kim1, D. V. Pelekhov1, G. N. Kakazei1,3, P. E. Wigen1, S. Batra4, and P. C. Hammel1,†
1Department of Physics, Ohio State University, 191 West Woodruff Avenue, Columbus, Ohio 43210, USA
2Center for Materials for Information Technology and Department of Physics & Astronomy,University of Alabama, Box 870209, Tuscaloosa, Alabama 35487, USA
3Institute of Magnetism National Academy of Sciences of Ukraine, 36b Vernadskogo Boulevard, 03142 Kiev, Ukraine
4Seagate Research, 1251 Waterfront Place, Pittsburgh, Pennsylvania 15222, USA

Received 7 June 2006; revised 16 August 2006; published 25 October 2006

The dynamic magnetic properties of micron-sized permalloy disks have been investigated using magnetic resonance force microscopy. From local spectroscopy data, information about the global sample properties is obtained. The experimental results are in good agreement with theoretical predictions, which account for magnetostatic modes with quantized in-plane wave vector. Ferromagnetic resonance spectral features due to the permalloy dots in close proximity to the micromagnetic probe tip provide two-dimensional images of the sample.

© 2006 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevB.74.144424
DOI:
10.1103/PhysRevB.74.144424
PACS:
75.30.Ds, 75.75.+a, 07.79.Pk, 76.50.+g

*Electronic address: tmewes@ua.edu

†Electronic address: hammel@mps.ohio-state.edu

 
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