期刊
SCIENTIFIC REPORTS
卷 8, 期 -, 页码 -出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/s41598-018-21356-3
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资金
- Spanish MINECO [MAT2013-47231-C2-1-P]
- Government of the Basque Country under scheme of Ayuda a Grupos Consolidados project [IT954- 16]
- Government of the Basque Country under Elkartek project [RTM 4.0]
- Russian Fund for Basic Research [16-53-48012]
- Act 211 Government of the Russian Federation [02.A03.21.0011]
- European funding (ERDF)
- European funding (ESF)
- Basque Government [MV-2017-1-0025, MV-2017-1-0030]
There is a pressing need for improving of the high-frequency magneto-impedance effect of cost-effective soft magnetic materials for use in high-performance sensing devices. The impact of the stress-annealing on magnetic properties and high frequency impedance of Fe-rich glass-coated microwires was studied. Hysteresis loops of Fe-rich microwires have been considerably affected by stress-annealing. In stress-annealed Fe-rich microwire we obtained drastic decreasing of coercivity and change of character of hysteresis loop from rectangular to linear. By controlling stress-annealing conditions (temperature and time) we achieved drastic increasing (by order of magnitude) of giant magnetoimpedance ratio. Coercivity, remanent magnetization, diagonal and of-diagonal magnetoimpedance effect of Fe-rich microwires can be tuned by stress-annealing conditions: annealing temperature and time. Observed experimental results are discussed considering relaxation of internal stresses, compressive backstresses arising after stress annealing and topological short range ordering.
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