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Topography, PiFM, and s-SNOM (at one harmonic of the dither frequency) images are acquired concurrently from a nano-antenna structure (highlighted by a dashed circle) of a heat-assisted magnetic recording head. Results at 830 nm.
Topography, MFM, and s-SNOM (at 3ω0) images are acquired concurrently from a powered heat-assisted magnetic recording head. Side-band MFM produces far superior image of the magnetic field than lift-mode MFM image. S-SNOM results are obtained at 830 nm.
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