Unusual dilution effect of non-magnetic Al-substitution in intermetallic DyAg

This paper introduces a supercell model to explain the field-induced multiple transitions and the anomalous dilution effect in the nonmagnetic-substituting intermetallic compounds Dy50−xAlxAg50, in which the shift of the field-induced transitions in the Al-doped samples results from the change of the magnetic structure. At the doping level of x=1.8 (the ratio of Al/Dy approximates 1/26), an anomalous magnetic dilution effect was observed, in which the dilution effect becomes weak and the magnetic behavior is fairly similar to that of pure DyAg. We assumed that the anomalous dilution effect mainly results from the formation of uniform distribution of supercell in the doped Dy48.2Al1.8Ag50.