Supplementary Material

The supplementary material contains FTIR and XRD results for the synthesized CSMO and BSMO materials, along with refined structural and magnetic data. For CSMO samples, Figure S1 presents the FTIR spectra of both as-synthesized and calcined samples, Figure S2 shows the XRD diffractograms of the as-synthesized powders, and Figure S3 shows the refined diffraction powders of the calcined materials. Corresponding data for BSMO are organized in the same manner: Figure S4 shows the FTIR spectra, Figure S5 shows the XRD diffractograms of the as-synthesized powders, and Figure S6 presents the refined diffraction profiles of the calcined BSMO powders. Structural parameters, including bond lengths and Mn−O−Mn bond angles, are compared in Table S1 for CSMO and in Table S2 for BSMO materials prepared by autocombustion and coprecipitation. Figure S7 presents hysteresis loops measured at different temperatures for CSMO samples, while Figure S8 shows the hysteresis loops measured at 100 K for all prepared BSMO materials.