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Grain structure and magnetism of nanocrystalline ferromagnets

IEEE Transactions on Magnetics · 1989 · Vol. 25(5) · pp. 3327–3329

G. Herzer✉(Vacuumschmelze (Germany))

Abstract

Amorphous ribbons of composition Fe/sub 73.5/Cu/sub 1/Nb/sub 3/Si/sub 13.5/B/sub 9/ have been annealed above their crystallization temperature, which produces a homogeneous, ultrafine grain structure of alpha FeSi with typical grain diameters of 10-20 nm. The temperature dependence of saturation magnetization reveals two different magnetic phases which correspond to the alpha -FeSi grains and the grain boundary phase, respectively. The nanocrystalline material exhibits excellent soft magnetic properties which are discussed within the framework of the random anisotropy model.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>

Metallic Glasses and Amorphous Alloys Magnetic Properties and Applications Magnetic properties of thin filmsNanocrystalline materialMaterials scienceGrain boundaryFerromagnetismAmorphous solidCrystallizationMagnetismGrain sizeCondensed matter physicsMagnetic anisotropy

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Modern soft magnets: Amorphous and nanocrystalline materials