Influence of Co Doping on Induced Anisotropy and Domain Structure in Magnetic Field Annealed (Fe1-xCox)79Mo8Cu1B12
B. Kuncaa, J. Marcin a, P. Švec b, J. Kováč a, P. Švec Sr. b and I. Škorvánek a
aInstitute of Experimental Physics, Slovak Academy of Sciences, Watsonova 47, 040 01 Košice, Slovakia
bInstitute of Physics, Slovak Academy of Sciences, Dúbravská Cesta 9, 845 11 Bratislava 45, Slovakia
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The effect of heat treatment in applied magnetic field on the induced anisotropy and domain structure of (Fe1-xCox)79Mo8Cu1B12 (x=0, 0.2, 0.5) nanocrystalline alloy system was investigated. A heat treatment of Co-doped samples under the application of longitudinal magnetic field resulted in squared hysteresis loops characterized by very low coercive field values. Sheared loops with tunable slope and good field linearity were obtained after annealing in transverse magnetic field. Corresponding domain structure showed uniform: character, oriented in the direction parallel or perpendicular to the ribbon axis after longitudinal or transverse magnetic field annealing, respectively. No effect of magnetic field annealing was found in Co-free sample. Correlations between Co-doping, the Curie temperature, and soft magnetic properties after magnetic field annealing are discussed.

DOI: 10.12693/APhysPolA.131.759
PACS numbers: 75.30.Gw, 75.50.Tt, 75.60.Ch, 75.60.Nt