Study of local environment in quasicrystallineAl86Mn14by Mössbauer effect

Mössbauer-effect measurements on ${\mathrm{Al}}_{86}$ ${(}^{57}$ ${\mathrm{Fe}}_{0.02}$ ${\mathrm{Mn}}_{0.}$ 98)>14 in the icosahedral phase indicate a distribution of quadrupole-splitting magnitudes at the iron sites. This distribution strongly indicates the existence of more than two inequivalent Mn sites. It can be fitted at least as well with a continuous distribution of sites of the form suggested by an amorphous analog as with a discrete set.