Phase diagram of Na3MnVP2O8F3 with Orb v3 conservative inf MPA; e_above_hull: 0.874643 eV/atom; predicted_stable: False
Na3(MnV)(PO4)2F3 — 50% Mn substitution on V site in NVPF. P4_2/mnm, 36 atoms. From Park et al. (2026) BO framework: Mn-V is best practical candidate (paper uses Mn0.75V1.25).