Approach to magnetic saturation in CuMn and AgMn

Abstract High field magnetic moment measurements on dilute Cu Mn and Ag Mn reveal that the magnetic state of an isolated Mn in solution may be compatible with the free ionic spin value S 0 = 5 2 and Lande factor G 0 = 2. The most dilute sample of each system shows this directly, after extrapolation of M vs . ( H -1 ) to ( H -1 ) = 0. Apparent moment reductions at higher concentrations may be due to residual antiferromagnetic bonds instead of a real change in the local S or g . From a theoretical model, the lowest moments of the bond distribution are determined for the CuMn case.