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- W4283395665 abstract "Several electronic devices require alloys with excellent soft magnetic properties, for further advancement. The effect of anisotropy and microstructure, particularly concerning grain orientation, on the high-frequency (100 kHz) magnetic properties of nanocrystalline Fe77.8Si11.6B7Nb2Cu0.6P1 toroidal cores has been studied. The field-induced anisotropy (Ku) of the cores was induced by applying transverse field annealing (TFA) with a magnetic field of 0.08 T at annealing temperatures ranging from 320 °C to 540 °C after having been optimally nano-crystallized by normal annealing (NA). The high-frequency magnetic properties were found to be affected by the competition between Ku and the averaged magnetocrystalline anisotropy (< K1 >). The optimal soft magnetic characteristics, i.e., high saturation magnetization of 1.5 T, high permeability of 18,400 (100 kHz, 0.06 A/m), low coercivity of 1.7 A/m, and low core loss of 209 kW/m3 (100 kHz, 0.2 T), were obtained when the < K1>/Ku ratio was approximately 1. With further increase in the TFA temperature, the texture of the α-Fe(Si) grains in the 〈1 0 0〉 direction became more prominent, leading to an increase in < K1 > and consequently deteriorating the soft magnetic properties. A bi-anisotropy and microstructure interaction model was established based on the experimental results, it can provide guidance for optimizing the high-frequency magnetic performance of Fe-based nanocrystalline alloys." @default.
- W4283395665 created "2022-06-25" @default.
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- W4283395665 date "2022-10-01" @default.
- W4283395665 modified "2023-09-30" @default.
- W4283395665 title "Influence of microstructure and anisotropy on the high-frequency soft magnetic properties of nanocrystalline FeSiBNbCuP alloys" @default.
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- W4283395665 doi "https://doi.org/10.1016/j.jmmm.2022.169639" @default.
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