The structure and magnetic properties of compounds of the $Dy_{1-x}Gd_xAl_2$ system

The magnetic properties of compounds of a $Dy_{1-x}Gd_xAl_2$ system, where $x$ = O; 0.2; 0.4; 0.6; 0.8; and 1.0, are investigated in a temperature range of 4.2-1000 K. An X-ray phase analysis is performed. The magnetic moments of ferromagnetic and paramagnetic regions are identified. The dependence of the ferromagnetic and paramagnetic Curie point on concentration is shown. It follows from the acquired experimental results that ferromagnetic exchange interaction between atoms of the rare-earth metals, which is monotonically dependent on $x$, dominates in the $Dy_{1-x}Gd_xAl_2$ system.