Model magnetic alloys: applicability of RKKI approximation

Calculation technique using RKKI approximation for alloy compositions which allows to obtain series of solid solutions, where only one lattice parameter is controllably changed or all three parameters remain constant (a-lattice period, x-concentration of magnetoactive ions, z-member of electrons per elementary cell), by respective selection of component amounts. Solid solution system where nonrare-the-earth part remains unchanged was synthesized and investigated to determine reasons of changes of rare earth metal alloy magnetic properties. Calculations are made for (GdxLa1-x)Zn, (GdxY1-x)Cd systems