A new type of longitudinally driven GMI effect of FeCo-based alloy

On investigating the longitudinally driven GMI effect of the DC annealed Fe₃₆Co₃₆Nb₄Si_4.8B_19.2 alloy ribbon, the current density was 3.2×10⁷ A/m², the GMI effect responds sensitively (the sensitivity is as high as 2440.2%/(A·m⁻¹)) to weak magnetic field after a 600-second annealing. The experimental result shows that the sensitivity is closely related to annealing current density, driven current frequency and eroded thickness. Supported by Zhejiang Provincial Science and Technology Key Project (Grant No. 2006C21109), Zhejiang Provincial Xinmiao Project (Grant No. 2007G60G2030046) and Zhejiang Provincial Natural Science Foundation (Grant No. Y405021)