Journal
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
Volume 433, Issue -, Pages 278-284Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jmmm.2017.03.028
Keywords
Glass-coated microwires; Soft magnetic properties; Taylor-Ulitovsky technique; Magnetostriction; Annealing; Stress relaxation; Crystallization
Funding
- Spanish MINECO [MAT2013-47231-C2-1-P]
- Basque Government under ELKARTEK project
- Ministry of Education and Science of the Russian Federation
- Russian Foundation for Basic Research [16-32-00797, 17-42-500929, 16-53-48012]
- Basque Government under Program of Mobility of the Investigating Personnel of the Department of Education, Universities and Investigation [MV-2017-1-0025, MV-2016-1-0030]
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We studied the magnetic properties and domain wall (DW) dynamics of Fe47.4Ni26.6Si11B13C2 and Fe77.5Si7.5B15 microwires. Both samples present rectangular hysteresis loop and fast magnetization switching. Considerable enhancement of DW velocity is observed in Fe77.5Si7.5B15, while DW velocity of samples Fe47.4Ni26.6Si11B13C2 is less affected by annealing. The other difference is the magnetic field range of the linear region on dependence of domain wall velocity upon magnetic field: in Fe47.4Ni26.6Si11B13C2 sample is considerably shorter and drastically decreases after annealing. We discussed the influence of annealing on DW dynamics considering different magnetoelastic anisotropy of studied microwires and defects within the amorphous state in Fe47.4Ni26.6Si11B13C2. Consequently we studied the structure of Fe47.4Ni26.6Si11B13C2 sample using X-ray diffraction and the atom probe tomography. The results obtained using the atom probe tomography supports the formation of the B-depleted and Si-enriched precipitates in the metallic nucleus of Fe-Ni based microwires. (C) 2017 Elsevier B.V. All rights reserved.
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