Magnetic Properties of Co-Fe-Si-B Microwires
P. Kwapulińskia, J. Gieraltowski b, C. Dolabdjian c, Z. Stokłosa a and G. Haneczok a
aUniversity of Silesia in Katowice, Institute of Materials Science, 75 Pułku Piechoty 1A, 41-500 Chorzów, Poland
bLDO/IUEM UMR CNRS 6538, UEB, Université de Bretagne Occidentale, Place Copernic, Technopôle, Brest-Iroise, 29280 Plouzané, France
cNormandie Université, UCBN, GREYC, CNRS, UMR 6072, F-14032 Caen, France
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In the paper the magneto-impedance effect in the Co68.15Fe4.35Si12.55B15 microwire with diameter of about 100 μ m is carefully studied. The measurements in close contact and contactless geometry were carried out in the static field ranging from 0 to 6 kA/m and frequencies of the alternating field from 20 Hz to 2 MHz. It is shown that the examined microwire shows high anisotropy of soft magnetic properties i.e. the circumferential permeability is at least 7 times higher than the longitudinal one. Moreover, the microwire can be used as highly sensitive magneto-impedance sensor working in contactless geometry especially at fields below 200 A/m.

DOI: 10.12693/APhysPolA.131.1256
PACS numbers: 72.15Gd, 75.30Gw, 75.50Gg, 75.50Kj, 75.90+w