Expand a crystal structure into a supercell
Calculate energy above the convex hull
Calculate phonon dispersion and band structure
Fe-W near-hull phase (13 meV/atom, SG 115 P-4m2) from GGen exploration action 01a07478-3c87-7bc5-ab99-e6b3f89c882b (H3). Validated 2026-09-06: parse OK, ordered, SG stable at symprec 0.01/0.1, dmin 2.472 A, rho 10.28 g/cm3.