Rapid synthesis of La0.85Na0.15MnO3 by spark plasma sintering: Magnetic behavior and magnetocaloric properties

► La0.85Na0.15MnO3 was synthesized using the Spark Plasma Sintering technique. ► Large magnetocaloric effect is related to a second-order magnetic transition and grain size. ► The relative cooling power value at 5 T reaches 316.6 J kg−1. ► These results make our compound potential candidate for magnetic refrigeration.