Effect of Mn Substitution on the Structure and Microwave Properties of Nd-Fe-B Nanocomposites
The influence of Mn content on the structure and magnetic permeability of Nd3Fe68-xMnxCo18B11 (x = 0, 1, 2) amorphous soft magnetic alloys was studied. The ribbons were prepared by melt-spining. The permittivity–frequency and permeability–frequency properties were determined in the microwave frequency regime of 2-18 GHz by vector network analysis. XRD spectra showed that only α-Fe diffraction peak was observed in the as-spun alloy. It is found that the acquired complex permittivity and permeability values match the microwave frequency when the 1at% Mn content doped. The results suggest a new design of microwave absorbers based on electromagnetic wave absorbing materials.
Young Won Chang, Nack J. Kim and Chong Soo Lee
G. Z. Xie et al., "Effect of Mn Substitution on the Structure and Microwave Properties of Nd-Fe-B Nanocomposites", Materials Science Forum, Vols. 561-565, pp. 1105-1108, 2007