Journal
APPLIED PHYSICS LETTERS
Volume 89, Issue 12, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.2355445
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A method is presented for determining the magnetomechanical ratio g(') in a thin ferromagnetic film deposited on a microcantilever via measurement of the Einstein-de Haas effect. An alternating magnetic field applied in the plane of the cantilever and perpendicular to its length induces bending oscillations of the cantilever that are measured with a fiber optic interferometer. Measurement of g(') provides complementary information about the g factor in ferromagnetic films that is not directly available from other characterization techniques. For a 50 nm Ni80Fe20 film deposited on a silicon nitride cantilever, g(') is measured to be 1.83 +/- 0.10.
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