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Anisotropy measurements in mesoscopic magnets by magneto-optical torque

AuthorsArmelles Reig, Gaspar ; Costa Krämer, José Luis ; Martín, José Ignacio ; Anguita, José Virgilio ; Vicent, J. L.
Issue Date25-Sep-2000
PublisherAmerican Institute of Physics
CitationApplied Physics Letters 77(13): 2039 (2000)
AbstractThe development of a versatile tool to quantify magnetic anisotropies in continuous and patterned magnetic thin films is reported. The technique involves measuring the magnetooptic response to a rotating magnetic field. Similarly to mechanical torque techniques, a single measurement obtains both the anisotropy constants and their symmetry axes distribution. The technique has been applied to analyze arrays of submicrometer stripe-shaped Fe (001) elements with different interelement separations (s). For s larger than 1 µm, the anisotropy associated with the stripes is independent on separation, with a value of the effective uniaxial anisotropy constant very consistent with theoretical estimations for these systems.
Description3 pages, 3 figures.
Publisher version (URL)http://dx.doi.org/10.1063/1.1310212
Appears in Collections:(IMN-CNM) Artículos
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