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Influence of corrosion on surface magnetic density in amorphous and nanocrystalline FeCuNbSi B alloys

Journal of Physics D: Applied Physics, ISSN: 0022-3727, Vol: 37, Issue: 8, Page: 1145-1150
2004
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Article Description

The variation of surface magnetization with corrosion in Fe CuNbSiB in the amorphous and nanocrystalline states is investigated. The results show that in the amorphous samples when the oxidized layer increases the surface saturation magnetization decreases. However, in the nanocrystalline samples the surface saturation magnetization does not change significantly with the corrosion process but the approximation to saturation is different in the non-oxidized and oxidized nanocrystalline samples. In the case of non-oxidized samples, the surface saturation magnetization is reached at a low applied magnetic field (1000 Am), whereas in the oxidized samples it is reached at a higher applied magnetic field of 7000 and 9000 Am for the samples annealed at 520°C for 60 min and 30 min, respectively.

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