Magneto-optic Observation on Micron-sized Periodic Structure

This contribution is motivated by the idea of the development of a 2D magnetic field detector. A potential application is in material evaluation - micro-crack detection using stray field sensing. Another motivation is the general study of interactions betwtween individual magnetic elements which can act as magnetic tunnel junction (NITJ) electrodes in MRAM (magnetic random access memory) array or magneto-static logic elements. The structure is studied by magneto-optic (MO) methods including MO diffraction measurement awl Kerr microscopy. At the end of this paper will be presented a comparison of experimental data obtained by Kerr microscopy with micro-magnetic simulation based on the lattice spin Hamiltonian

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