Abstract
We report the development of a new magnetic imaging technique: nonlinear magneto-optical microscopy. Magnetization-induced optical second harmonic generation (MSHG) is used to image the domain structure in ultrathin Pt/CoNi/Pt and Au/Co/Au/Fe/GaAs films. Due to both very high magneto optical contrast and enhanced interface sensitivity, fine details of magnetization several on film interfaces become visible with the MSHG imaging that are not detectable by usual magneto-optics.
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