Sizable magnetic entropy change in bismuth-substituted La0.75Bi0.1Na0.15MnO3 manganite

The sample La 0.75 Bi 0.1 Na 0.15 MnO 3 exhibits large Δ S Maxm of 4.4 J kg −1 K −1 near room temperature (RT) at low field of 1.5 T (LF). The coexistence of long and short-range interactions leading to first order like phase transition is responsible for LFRT magnetic entropy change.