N-type solid solutions doped with 1 was prepared by melt spinning, crushing and vacuum sintering processes. Microstructure, bending strength and thermoelectric property were investigated as a function of the doping quantity from 0.03wt.% to 0.10wt.% and sintering temperature from to , and finally compared with those of conventionally fabricated alloys. The alloy showed a good structural homogeneity as well as bending strength of . The highest thermoelectric figure of merit was obtained by doping 0.03wt.% and sintering at .