Tailoring of Magnetic Properties and Magnetoimpedance Effect in Thin Amorphous Wires
A. Zhukova,b,c, A. Talaatb, M. Ipatova,b, J.M. Blancob and V. Zhukovaa,b
aBasque Country University, Dpto. Fisica de Materiales, Fac. Quimicas, 20018 San Sebastian, Spain
bBasque Country University Dpto. de FĂ­sica Aplicada, EUPDS, 20018, San Sebastian, Spain
cIKERBASQUE, Basque Foundation for Science, Bilbao, 48011, Spain
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We have studied the effect of annealing conditions on magnetic properties of amorphous CoFeNi-based glass-coated microwires. We show that annealing can be very effective for manipulation the magnetic properties of amorphous ferromagnetic glass-coated microwires. Low coercivity and high giant magnetoimpedance (GMI) effect have been observed in as-prepared Co-rich microwires. After annealing of Co-rich microwires we can observe transformation of inclined hysteresis loops into rectangular and coexistence of fast magnetization switching and GMI effect in the same sample. We demonstrate that the switching field value of microwires can be tailored by annealing in the range from 4 to 200 A/m.

DOI: 10.12693/APhysPolA.129.694
PACS numbers: 75.50.Bb, 75.50.Cc, 75.50.Kj, 75.60.Ej