Journal
JOM
Volume 68, Issue 6, Pages 1563-1571Publisher
SPRINGER
DOI: 10.1007/s11837-016-1889-y
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Funding
- Spanish Ministry of Economy and Competitiveness (MINECO) [MAT2013-47231-C2-1-P, MAT2013-48054-C2-2-R]
- Russian Ministry of Education and Science under MISIS [K3-2015023]
- Asturias government [FC-15-GRUPIN14-085]
- Basque government under the Program of Mobility of the Investigating Personnel of the Department of Education, Universities and Investigation [MV-2016-1-0025, MV-2006-1-0018]
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We studied the correlation of magnetic properties, structure, and giant magnetoimpedance (GMI) effect in Finemet-type FeCuNbSiB microwires. We observed that the GMI effect and magnetic softness of glass-coated microwires produced by the Taylor-Ulitovsky technique can be tailored by heat treatment. We observed a considerable magnetic softening of studied microwires after annealing. This magnetic softening correlates with the devitrification of amorphous samples. Amorphous Fe-rich microwires exhibited a low GMI effect (GMI ratio below 1%). Considerable enhancement of the GMI effect (GMI ratio up to 125%) has been observed in heat-treated microwires with a nanocrystalline structure.
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