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Near-Field Imaging of High Frequency Magnetic Fields with Calorimetric Cantilevers Probes



Simone Lee, Y. C. Lee, Thomas Mitchell (Mitch) Wallis, John M. Moreland, Pavel Kabos


Calorimetric probes for near-field imaging of high-frequency (1-20 GHz) magnetic fields were fabricated by depositing patterned metal structures on micromachined, dielectric multilayer cantilevers. In the presence of high-frequency magnetic fields, the metal structures are heated via the generation of eddy currents or via ferromagnetic resonance (FMR). Measurement of the resulting cantilever deflection as a function of probe position produces a map of the microwave power distribution. Comparative measuements from probes with 5 and 10 υ Au rings show that the rings are the active area for eddy current generation. Probes with 10 υ square permalloy patches function in both the eddy current and FMR imaging modes.
Journal of Applied Physics


ferromagnetic resonance (FMR), microwaves, near field, scanning microwave microscopy


Lee, S. , Lee, Y. , Wallis, T. , Moreland, J. and Kabos, P. (2006), Near-Field Imaging of High Frequency Magnetic Fields with Calorimetric Cantilevers Probes, Journal of Applied Physics, [online], (Accessed July 20, 2024)


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Created April 20, 2006, Updated October 12, 2021