Ferromagnetic resonance force microscopy on microscopic cobalt single layer films

Creators: Zhang, Z.; Hammel, P. C.; Midzor, M.; Roukes, M. L.; Childress, J. R.

Abstract

We report mechanical detection of ferromagnetic resonance (FMR) signals from microscopic Co single layer thin films using a magnetic resonance force microscope (MRFM). Variations in the magnetic anisotropy field and the inhomogeneity of were clearly observed in the FMR spectra of microscopic Co thin films 500 and 1000 Å thick and ~ 40 × 200 µm^2 in lateral extent. This demonstrates the important potential that MRFM detection of FMR holds for microscopic characterization of spatial distribution of magnetic properties in magnetic layered materials and devices.

Additional Information

© 1998 American Institute of Physics. (Received 24 February 1998; accepted 31 July 1998) The authors gratefully acknowledge fruitful discussions with Philip Wigen at Ohio State University and the support of the Center for Nonlinear Studies at Los Alamos National Laboratory. Work at Los Alamos was supported by the U.S. Department of Energy, Office of Basic Energy Sciences.

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