Mossbauer study of titanium implanted alpha-Fe

Bulk alpha-Fe has been implanted with 200 keV Ti ions with doses ranging fr om 1 x 10(17) to 8 x 10(17) at. Ti cm(-2) and characterized by conversion e lectron Mossbauer spectroscopy (CEMS). The GEMS spectra recorded for the lo w dose Ti implantation of the surface region reveal the formation of the cr ystalline phases (bcc-FeTi solid solution and FeTi intermetallic compound) and of the amorphous Fe-Ti-C phase. For Ti doses exceeding 4 x 10(17) at. T i cm(-2) the amorphous FeTi phase is formed, whose relative spectral fracti on saturates at about 40% of the total spectral area at 6 x 10(17) at. Ti c m(-2). At high ion doses the amorphous Fe-Ti-C phase disappears but the bcc -FeTi and crystalline intermetallic FeTi phases persist, beside the amorpho us FeTi phase, even at the highest Ti dose used.