Abstract The effects of longitudinal magnetic field annealing on soft-magnetic properties (SMPs) and magnetic domain structure of Fe(82.6-85.7)Si(2-4.9)B(9.2-11.2)P(1.5-2.7)C0.8 amorphous alloys with a distinctly high Fe content of 93.5–95.5 wt% for high Bs were investigated. It was found that longitudinal magnetic field annealing could improve soft-magnetic properties (SMPs) of amorphous alloys effectively, except the one with poor thermal stability. Superb magnetic properties containing a minimum coercivity of 0.8 A/m, a maximum effective permeability of 11 × 103 at 1 kHz and minimum core loss of 0.052 W/kg (at Bm = 0.9 T and f = 50 Hz) were successfully obtained. Domain structures were characterized with a Magneto-optical Kerr Microscope to unveil the mechanism of SMPs improvement. Stripe domains were observed in the annealed high Fe content amorphous alloy ribbons with optimal soft magnetic properties.

中文翻译：

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通过纵向磁场退火改善明显高铁含量非晶合金的软磁性能

摘要 纵向磁场退火对Fe(82.6-85.7)Si(2-4.9)B(9.2-11.2)P(1.5-2.7)C0.8非晶合金软磁性能和磁畴结构的影响研究了高 Bs 的 93.5-95.5 wt% 的明显高 Fe 含量。发现纵向磁场退火可以有效改善非晶合金的软磁性能（SMPs），但热稳定性较差的非晶合金除外。成功获得了包括最小矫顽力为 0.8 A/m、最大有效磁导率为 11 × 103 在 1 kHz 和最小磁芯损耗为 0.052 W/kg（在 Bm = 0.9 T 和 f = 50 Hz）的优异磁性能。域结构用磁光克尔显微镜表征，以揭示 SMP 改进的机制。