Effects of Nd substitution on the magnetic properties and the frequency of natural resonance peak in Y2Fe17

In this study, the excellent Y2−xNdxFe17 (x = 0, 0.2, 0.4, 0.6, 0.8) magnetic particles were prepared by the reduction–diffusion process. Through the ferromagnetic coupling between light rare earth element Nd and Fe atoms, we effectively modulated the magnetic crystallographic anisotropy of Y2Fe17. As the amount of Nd doping increases, the natural resonance frequency of Y2−xNdxFe17/PU increases to 15.7 GHz, the saturation magnetization increases to 120.43 emu/g, the Curie temperature increases to 390 K, and the average hyperfine field also increases to 22.5 T. Notably, the doping of Nd atoms leads to a slight expansion of the Y2−xNdxFe17 lattice, exhibiting distinct anisotropic characteristics that preferentially develop along the basal plane. The doping of rare earth Nd atoms with strong magnetic crystal anisotropy can not only significantly enhance the easy-plane magnetic crystallographic anisotropy, causing the natural resonance peak to shift toward higher frequencies, but also has important guiding significance for broadening the high-frequency application range of easy-plane rare earth transition metal alloys. This achievement provides new ideas and methods for the design and development of high-performance magnetic materials.