J. Ding et al., MAGNETIC-PROPERTIES OF MECHANICALLY ALLOYED NANOCRYSTALLINE FE25CU75, Journal of magnetism and magnetic materials, 144, 1995, pp. 471-472
Results of Mossbauer studies and magnetic measurements on mechanically
alloyed Fe,Cu,,, which show superparamagnetic behaviour of the supers
aturated fcc-(Cu, Fe) phase are reported in this paper. The deviation
of the magnetisation curves from the Langevin function at lower temper
atures are probably due to interactions between Fe clusters.