Objemové magnetické vlastnosti nanostruktur studované vibračním magnetometrem VSM. Srovnání objemových a povrchových vlastností nanostruktur.
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Klimša, Ladislav
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Vysoká škola báňská - Technická univerzita Ostrava
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Abstract
The main reason of this thesis is to characterize and compare bulk and surface properties of magnetic nanostructures: Ni2MnGa Heusler alloys, amorphous and nanocrystalline FeSiNbCuB ribbons, magnetic nanopowders and liquids. Method for measuring bulk magnetic properties is based on the vibrating sample magnetometer VSM whose function and principle is going to be described in detail. Methods for determining the surface magneto-optical properties are the following: differential intensity method due to which the surface hysteresis loops are measured, and Kerr microscopy, which is used for the magnetic domains observation.
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Import 03/08/2012
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Vibrating sample magnetometer VSM, differential intensity method, Kerr microscopy, magnetic domains, soft magnetic materials, Heusler alloys, amorphous and nanocrystalline ribbons, magnetic nanopowders and liquids.