Tolerance factor and temperature dependence phase diagram of $\mathrm{Sr}_{2} \mathrm{MSbO}_{6}$ and $\mathrm{Sr}_{2} \mathrm{MTeO}_{6}$. The backgroupd color are indicating the phase-transition sequence's domain. An horizontal line is set at 300 K as guide to figure-out the RT space group for each material.
Tolerance factor and temperature dependence phase diagram of \mathrm{Sr}_{2} \mathrm{MSbO}_{6} and \mathrm{Sr}_{2} \mathrm{MTeO}_{6}. The backgroupd color are indicating the phase-transition sequence’s domain. An horizontal line is set at 300 K as guide to figure-out the RT space group for each material.