Abstract
The structure and magnetic properties of Fe79.5P12C6 Cu0.5Mo0.5Si1.5 alloy is studied with ballistic galvanometer and by X-ray diffraction. Results show: after zero field annealing (ZFA) at 613K, nanocrystalline alloy having good soft magnetic properties of B800A/m=1. 4T, Hc=5.4 A/m, μm=128000 is formed. The grain size of bcc-Fe precipitates is around 22nm. The lattice parameter a0 of bcc-Fe is 0.28667nm, which is a little larger than that of pure iron. With the increase of annealing temperature, a0 decreases. Annealing time ta has little influence on a0. The good soft magnetic property is explained by the reduction of effective anisotropy constant.
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