Field cooled and zero-field cooled magnetic effect on Cr-substituted Fe based amorphous Fe_(73.5-x)Cr_xCu_1Nb_3Si_(13.5)B_9 alloys

摘要

This paper focuses on the dependence of saturation magnetization and Curie temperatures as affected by Cr addition in the conventional FINEMET type of soft amorphous magnetic alloys with nominal composition Fe_(73.5-x)Cr_xCu_1Nb_3Si_(13.5)B_9 (0≤x≤17.5). Cr substituted Fe based amorphous samples has been prepared by melt-spinning technique. The field cooled magnetization, M_(FC) and the zero-field cooled magnetization, M_(ZFC) was measured with an applied field of 1 Oe using SQUID magnetometer. The divergence between M_(FC) and M_(ZFC) were observed for the sample x= 10, 12.5, 15 and 17.5, which may be attributed to the magnetic hardening at low temperature. It has been observed that the saturation magnetization at 5 and 300K decrease linearly with Cr concentration for the entire composition range, which indicates that a simple dilution of the Fe moment takes place due to Cr substitution.