Combinatorial Study on Irradiation Damage and Magnetic Properties of Fe-Cr alloys

Abstract

　An Fe-Cr single crystal film with Cr concentration gradient (0% - 13%Cr) was prepared by electron beam deposition and irradiated by 2.4MeV Cu²⁺ ions at 475°C. Irradiation effects on magnetization process were investigated using a Kerr microscope. Spike domains were observed at the boundary between irradiated and unirradiated regions, and the critical magnetic field where the spike domain disappears increased above the Cr concentration of 9%. This paper shows the usefulness of combinatorial study on irradiation phenomena and demonstrates a feasibility of magnetic nondestructive evaluation of the embrittlement in Fe-Cr alloys.