Facile synthesis and electromagnetic wave absorption properties of magnetic carbon fiber coated with Fe–Co alloy by electroplating

Engineering carbon fibers with dual coatings of FeCo and CuO towards enhanced microwave absorption properties

“…The tand E values for all samples are higher than tand M . Similar phenomena were observed in previous reports [17,21]. This finding suggests that the microwave absorption is mainly attributed to dielectric loss rather than magnetic loss [17,18,21,34,35].…”

“…1a shows that all CFs are coated with a dense and uniform coating. Unlike our previous work [21] where plate-shaped FeCo coating was obtained at a plating temperature of 25 C, the coating on CFs is particle-shaped (inset in Fig. 1a) when the bath temperature is 40 C, which is more suitable for the subsequent copper electrodeposition.…”

“…The measurements of complex permittivity and permeability were carried out using the similar process described in our previous reports [17,21,29]. Briefly, the specimens were prepared by hotpressing the mixtures of composite fibers (with a total coating thickness of ca.…”

“…Therefore, carbon materials such as CNTs, graphenes, and CFs are generally combined with magnetic materials (such as magnetic metals and oxides) to produce various hybrids. For instance, CFs are often hybridized with Fe 3 O 4 [17,18], CoO x [19], FeCo alloy [20,21], and CuO [22]. Furthermore, dual coatings on CFs have also been reported and better EM wave absorption has been demonstrated as compared to those CFs with a sole coating [22,23].…”

A simple wet-chemical approach to synthesize shape controlled high magnetic moment Fe71–Co29 nanocrystals

“…Synthesis of magnetic nanoparticles aroused intense research interest owing to its variety of sophisticated applications in various engineering and biomedical applications such as ultrahigh density data storage [1], ferrofluids [2], catalysis [3], magnetic resonance imaging [4], magnetic hyperthermia treatment [5] and radio frequency applications [6], electromagnetic wave observer [7], etc. Among all the binary transition metal alloys known, Fe-Co alloys possess a unique combination of high saturation magnetization (M s ), high Curie temperature, low magnetocrystalline anisotropy and good strength.…”