Abstract：FeCo nanomaterials have broad application prospects because of their high saturation magnetization and large magnetic permeability. However, how to synthesize FeCo nanomaterials with high magnetocrystalline anisotropy energy is still keeping a challenge. Theoretical calculation showed that anisotropic one-dimensional nanowires can improve the magnetic properties of materials. Therefore, a novel wet chemical method is proposed to directly synthesize one-dimensional FeCo nanowires. This method employed amino group, such as solvent hexanamine and surfactant oleamine, to induce anisotropy growth of FeCo nanowire. The magnetocrystalline anisotropy of the FeCo phase was enhanced by shape anisotropy, and FeCo nanowires with high coercivity were successfully synthesized. The morphology and magnetic properties of FeCo nanomaterials can be regulated by adjusting the reaction temperature. The one-dimensional FeCo nanowires with uniform dispersion were obtained at the reaction temperature of 280 °C. The coercivity Hc of the nanowires is as high as 1092 Oe, and the saturation magnetization Ms is 113 emu/g. This paper provides a new route and experimental basis for the controllable preparation of one-dimensional FeCo nanomaterials with high coercivity.
2023, Vol. 30 