Relaxed with Orb v3; 0.03 eV/Å threshold; final energy = -76.7223 eV; energy change = -7.8651 eV; symmetry: P-3m1 → P-3m1
Fe8Bi2N (space group: P-3m1 #164, crystal system: trigonal, point group: -3m)
Phonon band structure (supercell [2, 2, 2], Δ=0.01 Å); imaginary modes detected; min freq = -7.64 THz
Phase diagram of Fe8Bi2N; e_above_hull: 0.656510 eV/atom; predicted_stable: False