29 April 2003 Imaging of magnetic domain structures using optical techniques
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Abstract
High-resolution optical techniques for the imaging of magnetic domains in ferromagnetic materials such as confocal microscopy and scanning near-field optical microscopy are discussed. The imaging capabilities of different techniques and image formation are investigated in the case of in-plane as well as out-of-plane magnetic anisotropy in different polarisation configurations. It is shown that the magneto-optical resolution of near-field measurements depends on the film thickness and is limited by the diffraction on magnetic domains throughout the film. For thin magnetic films, sub-wavelength resolution can be achieved. High-resolution optical imaging is required for characterisation of the micro-magnetic and magneto-optical properties of novel magnetic materials in order to adopt a bottom-up approach in the search for new materials with improved characteristics.
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Wayne Dickson, Satoshi Takahashi, Robert Pollard, Ron Atkinson, Anatoly V. Zayats, "Imaging of magnetic domain structures using optical techniques", Proc. SPIE 5118, Nanotechnology, (29 April 2003); doi: 10.1117/12.499187; https://doi.org/10.1117/12.499187
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