Correlation between the nanocrystalline Sm(Fe,Mo)12 and its out of equilibrium phase Sm(Fe,Mo)10

International audienceNanostructured Sm-Fe-Mo semi-hard magnetic material exhibiting enhanced magnetic properties can be pro-duced by ball milling followed by recrystallization. Milled samples were annealed for 30 min in a vacuum at different temperatures (T A) between 700 and 1190 • C. The effects of heat treatment and Mo content on struc-tural and magnetic property changes have been investigated by means of x-ray diffraction using the Rietveld method, transmission electron microscopy and magnetic measurements. For samples annealed at T A > 900 • C the tetragonal ThMn 12 -type structure is identified, while for 700 5 kOe) has been observed for the new hexagonal P 6/mmm phase suggesting that nanocrystalline Sm(Fe,Mo) 10 , is a semi-hard material, and is potential candidate for magnetic recording