Fig. 4: Experimental and simulated X-ray diffraction patterns of the La1−xCaxMnO3 (0.5 < x ≤ 0.6) compositions at 5 K.

The black, red, and blue lines correspond to the experimental, to the calculated using the average crystal structure model, and to the calculated using the first-order satellites model, respectively. The well-resolved superlattice peaks are highlighted in yellow. Superlattice peaks with appreciable intensity have k = 2n.