Hard magnetic properties of melt-spun Nd(Fe,M)12 nitrides and carbides

Abstract
The hard magnetic properties of melt-spun Nd(Fe,M)12 nitrides and carbides were studied. The highest coercivity was obtained in NdFe10Mo2Nx with values of 8.8 kOe at room temperature and 33.7 kOe at 10 K. Other Nd(Fe,M)12N(C)x compounds had similar intrinsic magnetic properties but a lower coercivity than NdFe10Mo2Nx. The low coercivities were attributed to the three soft sources; α-Fe, non-ThMn12 structure, and insufficient nitrogenation or carbonation.