Neutron irradiation effect on the magnetic properties in Fe87Zr7B6

Abstract The effects of neutron irradiation on the magnetic properties in Fe 87 Zr 7 B 6 (at%) amorphous ribbon were studied by hysteresis loop and complex permeability measurements. The fluxes of thermal ( n th ) and fast neutrons ( n f ) fluences were 3.09×10 13 n th cm −2 s −1 and 1.87×10 11 n f cm −2 s −1 , respectively. After neutron irradiation, the imaginary part of complex permeability in low-frequency region decreased due to the decrease of wall motion, but the permeability in high-frequency region increased due to the enhancement of rotational magnetization. As a whole, initial permeability in neutron irradiated sample was larger than that in as-quenched one, but the coercive force and saturation magnetization did not change significantly after neutron irradiation.