Tuning microwave absorption properties of melt-spun FeSiCo alloys based on the addition of rare earth Sm

摘要

The effects of Sm-doped on microwave absorption properties of melt-spun FeSiCo alloys were studied in this paper. The composite alloys were characterized by XRD, SEM, VSM, and vector network analysers (VNA). The phase identification shows that only α-Fe(Co) phase was observed for all samples. SEM images have revealed that the morphology of all powders were flaky shape with different particle size. The values of saturation magnetization (M_s) and coer-civity (H_c) increased with the increase of Sm-doping content. In addition, the minimal reflection loss ((RL)_(min)) is - 7.96 dB at 1.7 GHz with the thickness of 3 mm for Sm_1Fe_(79)Si_(10)Co_(10) sample. The results reveal that the addition of Sm can improve the microwave absorption property of FeSiCo alloys.