Has a version
RbTaO3 cubic perovskite (Pm-3m) - relaxed
Calculate energy above the convex hull
RbTaO3 cubic perovskite, Pm-3m (SG 221), a=4.095 Å. From Dorakhan et al. Small 2025. Computational only, synthesis unsuccessful. Larger A-cation than KTaO3.