Role of lanthanum in modifying the magnetic state in RNi2 solid solutions with RÂ =Â Tb, Dy, Ho

Temperature dependence of the magnetic entropy change ΔSmag for Dy1−xLaxNi2 compounds with various compositions (from x = 0.0 to x = 0.5) near its ordering temperature for a field change of 0.42 T (a) and 4.2 T (b).