<p>In this study, La_0.67Ba_0.33Mn_0.85Fe_0.15O₃ (sample C1) and La_0.57Eu_0.1Ba_0.33Mn_0.85Fe_0.15O₃ (sample C2) compounds were synthesized using the sol-gel method to form a composite material. The Curie temperatures of C1 and C2 were determined to be 170 K and 100 K, respectively. Both compounds exhibited relatively low magnetocaloric (MC) properties. To enhance the MC effect, a theoretical investigation was conducted on a composite composed of C1 and C2. The results indicate that the optimized composite, consisting of 80% C1 and 20% C2, exhibits a Curie temperature of 110 K and shows potential for magnetic refrigeration applications. The refined critical exponents β, γ, and δ, extracted from modified Arrott plots and the Kouvel-Fisher method, suggest that the composite’s magnetic behavior follows the mean-field model.</p> Graphical Abstract <p></p>