“…The effective anisotropy constant of MnAs has been reported in the literature for bulk, thin films, and nanocrystals. At room temperature, bulk MnAs is characterized by a value 24 K eff =76x10 4 erg/cm 3 , while thin films grown on GaAs substrates exhibit anisotropy values 25,26,27,28 ranging from 12x10 4 to 72x10 4 erg/cm 3 . It was also found that for MnAs nanocrystals somewhat smaller than those of this study, the anisotropy values 29 were in the range 14x10 4 to 18x10 4 erg/cm 3 .…”