H Sepehri Amin, R Gholamipour, F Shahri, A Mohammadi
Journal of magnetism and magnetic materials
2008

This paper reports structural and magnetic properties of rapidly quenched Co64Fe4Ni2B19−xSi8Cr3Alx (x=0, 1, 2, 3) amorphous ribbons prepared by the single roller melt spinning process. Thermal analysis of the ribbons shows that the replacement of B by Al causes a decrease in the crystallization temperature. Structural studies of the samples have been carried out by transmission electron microscopy and X-ray diffraction. With optimum amount of Al in the alloy, the as-cast material has better soft magnetic properties. The highest maximum permeability (3.55×105), saturation magnetization (523.7 mT) and the lowest coercivity (0.8174 A/m) were obtained in the sample with x=2.