Cell + Ionic relaxation with Orb v3 conservative inf MPA; 0.03 eV/Å threshold; final energy = -147.1595 eV; energy change = -2.8193 eV; symmetry: Fm-3m → Fm-3m
Rock-salt ordered double perovskite Cs2YAgBr6, Fm-3m (225), a=11.0 Å, built with ASE for Wang et al. 2025 PV screening analysis