Influence of alloying additions (Mo, Mn, Co) on the magnetic properties of FeSiB amorphous alloys

Chem. Met. Alloys 1 (2008) 333-337

https://doi.org/10.30970/cma1.0072

Łukasz MADEJ, Lidiya BEDNARSKA, Viktor NOSENKO, Bogdan KOTUR, Artur CHROBAK, Grzegorz HANECZOK

In the present paper the magnetic permeability μ, magnetic after-effects Δμ/μ, saturation magnetization μ₀M_S, Curie temperature T_C, primary crystallization temperature T_X1 and magnetostriction coefficients λ were examined for a group of amorphous alloys, i.e. Fe₈₀Si₆B₁₄ and Fe₇₅XSi₆B₁₄ (X = Mo₅, Mo_2.5Mn_2.5, Mo_2.5Co_2.5). It was shown that these alloying additions cause a decrease of the Curie temperature, saturation magnetization, magnetic permeability, magnetic after-effects and magnetostriction coefficients, and an increase of the primary crystallization temperature with respect to Fe₈₀Si₆B₁₄. The observed decrease of both magnetostriction coefficients – saturation magnetostriction and volume magnetostriction, is correlated with the decrease of the Curie temperature. Cobalt and manganese atoms influence the crystallization temperature in the same way as molybdenum, which means that the diffusion processes responsible for crystallization are not enough sensitive to this kind of alloying addition.

Saturation magnetization μ₀M_S versus temperature T for some of the examined alloys.

Keywords

Amorphous alloys / Magnetic properties / Magnetostriction