Effect of Fe doping on microwave absorption performance of magnetic powder NdNi5

Abstract

Soft magnetic alloy powder NdNi5-xFex (x = 0.0, 0.1, 0.3, 0.4) was prepared by vacuum arc melting, homogenization annealing and ball milling methods. The reflection loss of NdNi5-xFex powders were discussed based on the structural morphology, measured hysteresis loops and electromagnetic parameters. The lattice distortion and the saturation magnetization of NdNi5-xFex powders increase and the formant of the electromagnetic parameter moves toward the low frequency. The absorption peak of reflection loss also moves toward low frequency. In addition, the Nd–Ni–Fe alloy powder can achieve the best absorption bandwidth, and the minimum reflection loss value of 1.29 GHz and − 29.29 dB, respectively, with the addition of Fe content is 0.1. Add Fe content appropriately, and adjusting the thickness can effectively improve the absorbing performance of the material in c-band, so the powder has a good application prospect in c-band.