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Publication Citation: Microwave Power Imaging with Ferromagnetic Films Incorporated in Bimaterial Cantilevers

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Author(s): Thomas M. Wallis; John M. Moreland; Billy F. Riddle; Pavel Kabos;
Title: Microwave Power Imaging with Ferromagnetic Films Incorporated in Bimaterial Cantilevers
Published: November 01, 2004
Abstract: We report an imaging technique that uses ferromagnetic films incorporated in bimaterial cantilevers for spatially resolved calorimetric detection of microwaves emitted by sources of high frequency (4 to 20 GHz) radiation. The ferromagnetic film absorbs microwave power via eddy currents within the film and, in the presence of a biasing magnetic field, via ferromagnetic resonance. The resultant heating of the bimaterial cantilever leads to deflection that is detected by a laser beam-bounce method. Comparison of images acquired with and without a biasing magnetic field reveals sensitivity to the normal and tangential components of the magnetic field.
Citation: Journal of Magnetism and Magnetic Materials
Pages: pp. 320 - 323
Keywords: Fe alloys, ferromagnetic resonance, magnetic resonance free microscopy microwave.
Research Areas: Electromagnetics
PDF version: PDF Document Click here to retrieve PDF version of paper (148KB)