Journal
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
Volume 471, Issue -, Pages 110-115Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jmmm.2018.09.072
Keywords
Amorphous alloy; Magnetic field annealing; Soft-magnetic properties; Magnetic domain
Funding
- National Key Research and Development Program of China [2017YFB0903902]
- National Natural Science Foundation of China [51601206, 51771159, 51771083]
- Zhejiang Provincial Natural Science Foundation [LQ18E010006]
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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 weA., for high B, 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 x 10(3) at 1 kHz and minimum core loss of 0.052 W/kg (at B-m = 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.
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