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We report the structural, magnetic, and magnetocaloric properties of Bismuth (Bi)-substituted manganite La0.85-xBixNa0.15MnO3 (x=0, 0.1, 0.2, 0.25, and 0.3). X-ray diffraction data implicates the rhombohedral structure with $$ R\overline{3}c $$ R 3 ¯ c space group. Bi2O3 has helped in ensuring phase pure, densified compounds even at low sintering temperature and hence avoiding the evaporation of volatile sodium. The increase in grain size and decrease in magnetic transition temperature (TC) are due to the Bi chemical activity and electronic structure. The samples have shown indirect magnetic transformation from soft ferromagnet to canted ferromagnet/antiferromagnet with Bi. Griffiths phase-like behavior in the inverse magnetic susceptibility was observed for x=0.1; with further increase in Bi, the samples are found to develop the antiferromagnetic competing phase. The phenomenological model was used to model the thermomagnetic behavior of all the samples. The sample with x=0.1 shows an increase in magnetic entropy change upon Bi substitution and the maximum of magnetic entropy change is seen at 275K emphasizing its potential in room temperature magnetic refrigeration.

The sample La0.75Bi0.1Na0.15MnO3 exhibits large ΔSMaxm 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.

This study focuses on the effects of the substitution of a nonmagnetic ion on the structure, magnetism, and thermoelectric power of binary La0.85−xBixK0.15MnO3 (x = 0, 0.15, 0.3) manganites synthesized via a ceramic route.

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Correction for ‘Sizable magnetic entropy change in bismuth-substituted La0.75Bi0.1Na0.15MnO3 manganite’ by Lozil Denzil Mendonca et al., Phys. Chem. Chem. Phys., 2022, 24, 13171–13188, https://doi.org/10.1039/D2CP00559J.