Evolution of the laboratory X-ray diffraction pattern at room temperature of $\mathrm{Ca}_{2-x} \mathrm{Sr}_{x} \mathrm{LaSbO}_{6}$ (a) and $\mathrm{Ca}_{2-x} \mathrm{Sr}_{x} \mathrm{SmSbO}_{6}$ (b) with ( $x=0.5,1.0$). In the insets, details from the X-ray powder diffraction patterns in $53-58^{\circ}$ range, to show the continuous evolution of the pattern with increasing of Sr concentration.
Evolution of the laboratory X-ray diffraction pattern at room temperature of \mathrm{Ca}_{2-x} \mathrm{Sr}_{x} \mathrm{LaSbO}_{6} (a) and \mathrm{Ca}_{2-x} \mathrm{Sr}_{x} \mathrm{SmSbO}_{6} (b) with ( x=0.5,1.0). In the insets, details from the X-ray powder diffraction patterns in 53-58^{\circ} range, to show the continuous evolution of the pattern with increasing of Sr concentration.