Abstract
In this concise overview, the physical principles of magnetic Barkhausen effect will be briefly discussed and its recent applications in material characterization will be considered. There are new trends in micromagnetic Barkhausen effect emissions and its applications in the material characterization area. These emissions take place in magnetic materials subjected to changing applied magnetic field, and can be used, for instance, to study noninvasively surface characterization of materials. Since these emissions are quite sensitive to changes in the microstructure and subsurface stress states in magnetic materials, various applications of these of micromagnetic emissions have been found in areas such as nuclear, aerospace, and automotive technologies which use magnetic materials.
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