ACTA

Magnetic Properties of Glass-Coated FeWB Microwires

P. Klein^a, R. Varga^a, R. El Kammouni^b and M. Vazquez^b
^aInstitute of Physics, Faculty of Sciences, P.J. Safarik University, Park Angelinum 9, 041 54 Košice, Slovakia
^bInstitute of Material Science of Madrid, CSIC, 28049 Madrid, Spain

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We have studied magnetization process in amorphous bistable Fe₈₀W₃B₁₇ microwires with reduced Curie temperature. High mechanical stresses from glass-coating, induced during production process, result in high switching field. Reducing the length of microwire, the switching field decreases as a result of reduction of magnetoelastic anisotropy. Moreover, the decrease of magnetoelastic anisotropy results in a complex temperature dependence of the switching field. On the other hand, strong variations of the switching field with temperature can be employed in miniaturised temperature sensor.

DOI: 10.12693/APhysPolA.126.70
PACS numbers: 75.50.Kj, 75.60.Ej