Fe3MnN (requested space group: P4/mmm #123, optimized: 9 steps, cell relaxed (isotropic))
Phonon band structure (supercell [2, 2, 2], Δ=0.01 Å); imaginary modes detected; min freq = -0.84 THz
Phase diagram of MnFe3N; e_above_hull: 0.070910 eV/atom; predicted_stable: False