Fe4Mn3B4 (requested SG: P4/m #83, calculated SG: P1 #1, optimized: 400 steps, cell relaxed (isotropic))
Phonon band structure (supercell [2, 2, 2], Δ=0.01 Å); imaginary modes detected; min freq = -6.18 THz
Phase diagram of Mn3(FeB)4; e_above_hull: 0.704986 eV/atom; predicted_stable: False