The distribution of magnetic moment magnitudes in an AlMnSi quasicrystal.

Magnetic susceptibility measurements on quasicrystalline i- Al sub (74) Mn sub (20-x) V sub x Si sub 6 establish that vanadium substitutes for manganese only at magnetic sites, and in a manner which preferentially occupies first those manganese sites with the largest local magnetic moments. Since vanadium possesses no local moment in this context, these measurements not only settle unequivocally the question concerning the relative proportion of magnetic and nonmagnetic manganese atoms in i- Al sub (74) Mn sub (20) Si sub 6, but also enable the actual distribution function of magnetic moment magnitudes to be determined.