Abstract
A state-of-the-art scanning Hall probe microscope (magnetic field sensitivity : spatial resolution: 30 ▪: 0.8 μm—300 ▪: 0.25 μm) has been used to image a range of ferromagnetic media. The technique is non-invasive and yields quantitative profiles of the stray fields near the sample surface as illustrated by images of a standard magnetic reference sample, permalloy nanostructures and colossal magnetoresistive perovskites. Rapid scanning (∼ 1 frame/12 sec) has also been used to study the domain reversal in a thin Ni film.
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