Abstract
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 CoSi, CoXSi (X = Fe, Mn), and CoFeMnSi 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 CoSi and its doped alloy powders were successfully obtained. The electrical conductivities of MnCoSi and FeMnCoSi were measured using a resistivity tester. The results indicate that Mn doping and Fe and Mn Co-doping enhanced the electrical conductivity of CoSi. The magnetic properties of CoSi were determined using a vibrating sample magnetometer. We observed that the magnetic properties were enhanced after doping. CoFeMnSi exhibited excellent magnetic properties. Further, its permeability was determined using a vector network analyser. At a low frequency, the u’ and u” values of CoFeSi and CoFeMnSi 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.
Highlights
Magnetic materials are widely used in various fields of renewable energy, energy conservation and environmental protection, such as solar and wind power generation, new energy vehicles, rail transit, energy saving lighting, and new planar displays [1,2,3]
The results showed that a sequential growth of Co2 Si and CoSi was observed in the reaction between the Si and Co films
All the highly intense peaks match those of the diffraction pattern of Co2 Si with the crystal system of orthorhombic
Summary
Magnetic materials are widely used in various fields of renewable energy, energy conservation and environmental protection, such as solar and wind power generation, new energy vehicles, rail transit, energy saving lighting, and new planar displays [1,2,3]. The intermetallic compound Co-Si is an important alloy widely used in the fields of electronics, power, and machinery [4,5] It has good oxidation and corrosion resistances, stable physical and chemical properties, high temperature resistance, high strength, a large elastic modulus, and high structural stability [6]. Studied the thermoelectric properties of CoSi. Joa et al investigated the magnetic properties of Co–Si alloy clusters. The electronic structure and magnetic properties of the Co–Si alloy clusters were investigated using ab initio spin-polarised density functional calculations. Velez and Valvidares conducted a study on the structural and magnetic properties of amorphous Co–Si alloy films. The results showed that a sequential growth of Co2 Si and CoSi was observed in the reaction between the Si and Co films.
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