Effects of Fe, Mn Individual Doping and (Fe, Mn) Co-Doping on Ferromagnetic Properties of Co2Si Powders

Nanomaterials

Quan Xie¹  Jiang Zou¹  Bo Wu²  Lifeng Wang²  Juan He² 

[1] College of Big Data and Information Engineering, Guizhou University, Guiyang 550025, China;School of Physics and Electronic Science, Zunyi Normal College, Zunyi 563006, China;

关键词: magnetic;    doping;    Co₂Si;    saturation magnetisation;    coercivity;    remanence;   

DOI  :  10.3390/nano12020293

来源: DOAJ

【 摘 要 】

Magnetic materials are crucial energy materials that are widely used in day-to-day life. Therefore, the development and study of high-performance magnetic materials are of great significance. In this study, the magnetic materials Co${}_{66.6}$Si${}_{33.4}$, Co${}_{60.6}$X${}_6$Si${}_{33.4}$ (X = Fe, Mn), and Co${}_{60.6}$Fe${}_3$Mn${}_3$Si${}_{33.4}$ were prepared via the ball milling and sintering processes. Their crystal structures, electrical conductivity, and magnetic properties were investigated via the X-ray diffraction analysis and by using a resistivity tester, vibrating sample magnetometer, and vector network analyser. The X-ray diffraction analysis revealed that a single phase of Co${}_{66.6}$Si${}_{33.4}$ and its doped alloy powders were successfully obtained. The electrical conductivities of Mn${}_6$Co${}_{60.6}$Si${}_{33.4}$ and Fe${}_3$Mn${}_3$Co${}_{60.6}$Si${}_{33.4}$ were measured using a resistivity tester. The results indicate that Mn doping and Fe and Mn Co-doping enhanced the electrical conductivity of Co${}_{66.6}$Si${}_{33.4}$. The magnetic properties of Co${}_{66.6}$Si${}_{33.4}$ were determined using a vibrating sample magnetometer. We observed that the magnetic properties were enhanced after doping. Co${}_{60.6}$Fe${}_3$Mn${}_3$Si${}_{33.4}$ exhibited excellent magnetic properties. Further, its permeability was determined using a vector network analyser. At a low frequency, the u’ and u” values of Co${}_{60.6}$Fe${}_6$Si${}_{33.4}$ and Co${}_{60.6}$Fe${}_3$Mn${}_3$Si${}_{33.4}$ were enhanced; whereas, at a high frequency, after doping, the u’ and u” values changed only slightly. This study can be used as a basis for future studies on magnetic functional materials.

【 授权许可】

Unknown