Mossbauer analysis of pure iron surface implanted with nitrogen ion

Mossbauer measurements have been carried out for pure iron powder samples, the whose surface was implanted with nitrogen ions by plasma source ion imp lantation techniques. The measured Mossbauer parameters, Mossbauer factor f , Isomer shifts delta and quadrupolar splitting Delta E-Q, for samples of u nimplanted with nitrogen are compared with those of implanted ones. From th is study we understand how ion implantation improves surface properties of iron.