Fig. 3. Powder X-ray diffraction patterns of the SAS La : B precipitates after 750 °C calcination. In ascending order, the B site samples are: Cr (red); Mn (black); Fe (blue); Co (green); and Ni (purple). Phases: perovskite phases (for simplicity, the rhombohedral, orthorhombic and cubic phases are not differentiated); Fe₂O₃; La₂O₃; Co₃O₄; and La₂CrO₆.