The authors regret to inform that an error occurred with the sample La0.5Sr0.5Mn0.5Co0.5O3−δ and La0.75Sr0.25Mn0.5Co0.5O3−δ labeling. Hence data reported for La0.5Sr0.5Mn0.5Co0.5O3−δ actually refer to La0.75Sr0.25Mn0.5Co0.5O3−δ and vice versa. It should be noted however, that this error does not affect the conclusions of the paper. An updated characterization of La1−xSrxMn0.5Co0.5O3−δ, x = 0.25 and 0.5 samples is presented below. The crystal structures of the samples were refined by the Rietveld method using X-ray powder diffraction data (XRPD). La1−xSrxMn0.5Co0.5O3−δ (x = 0.25) sample contains a phase, which crystallizes in rhombohedrally distorted perovskite structure (S.G. R-3c, a = 5.4738(1) Å, c = 13.2743(4) Å) and an admixture of La2O3 (0.5 wt %)  (Fig. 1). EDX analysis data for this powdered sample performed in Carl Zeiss NVision 40 scanning electron microscope, resulted in the following cation ratio La:Sr:Co:Mn = 31(3):22(4):22(2):25(3). La1−xSrxMn0.5Co0.5O3−δ (x = 0.5) sample (Fig. 2) contains tetragonal perovskite phase (S.G. P4/mmm, a = 3.8462(2) Å, c = 3.8415(3) Å) and an admixture of Co3O4 (1.5 wt %) . EDX analysis of the powdered sample resulted in the following cation ratio La:Sr:Co:Mn = 25(2):28(3):23(2):24(2). The authors would like to apologise for any inconvenience caused.