Sintered rare-earth magnet and method of manufacture

A sintered rare-earth magnet comprising R (wherein R is two or more elements selected from rare-earth elements, with Nd and Pr being essential), T (wherein T is one or more element selected from Fe and Co), boron (B), M1 (wherein M1 is one or more element selected from Al, Si, Cr, Mn, Cu, Zn, Ga, Ge, Mo, Sn, W, Pb and Bi) and M2 (wherein M2 is one or more element selected from Ti, V, Zr, Nb, Hf and Ta), with R accounting for 12.5 to 16.0 at %, B for 4.5 to 5.3 at %, M1 for 0.5 to 2.5 at %, M2 for 0.05 to 0.5 at % and the balance being T,

• wherein the magnet has a R2T14B main phase and, over an area fraction of more than 0% and up to 10%, an R2(T, M1)17 phase covered with an R6(T, M1)14 phase and an R-rich phase, and
• wherein two magnetization inflection points—a first knickpoint on a low magnetic field side and a second knickpoint on a high magnetic field side—are present in a second quadrant of a magnetic polarization curve at 23° C.