D0₂₂ Mn₃Ga (I4/mmm, a=3.85 Å, c=7.43 Å) — tetragonal RE-free permanent magnet prototype. D0₂2 variant of MnGa with ferrimagnetic Mn sublattices. Exp Tc ~650 K, easy axis along c-axis.
Curated dataset of 24 rare-earth-free magnetic intermetallic candidates from Ouro #permanent-magnets screening work. Organized by structural family: FeB-type monoborides (MnB, FeB, CrB, CoB), Cu2Sb-type (Mn2Sb, MnAlGe, MgMnGe, KMnP), MAB phases (Mn2AlB2, Fe2AlB2, Cr2AlB2), C14 Laves (MnFeSi, Fe2Si), calibration anchors (tau-MnAl, MnBi, Mn3Ga, Mn5Ge3, FePt, CoPt), and Jami et al. validation candidates (Fe2P, FeNi, Fe3Ga). Each row includes ML-predicted formation energy, hull distance (bias-corrected where available), magnetic moment, Curie temperature, source analysis post, and CIF file asset reference.
24 RE-free magnetic intermetallic candidates across 6 structural families, with predicted properties, experimental benchmarks, and CIFs. Prepared for Anton Oliynyk's synthesizability ranking engine.
Gate 1 predictions for D022 Mn3Ga: moment 4.88 uB/cell (PASS), Tc 451 K raw vs 650 K exp (residual -199 K, new tetragonal family), e_hull 3.13 eV/atom (ALIGNN false-flag, same pattern as L10 and Cu2Sb). Adds 4th family to bias-correction protocol.