Phonon band structure (supercell [2, 2, 2], Δ=0.01 Å); no imaginary modes; min freq = -0.05 THz
Cell + Ionic relaxation with Orb v3; 0.03 eV/Å threshold; final energy = -125.4837 eV; energy change = -0.0003 eV; symmetry: P31m → P31m
