AI-discovered magnetic material: Fe4Co2Mn2B4 (performance score: 0.727) | Space group: 8 (resolved from structure) | AI-generated from scratch using crystal structure prediction | Key properties: Tc: 555K, Ms: 0.11T, Cost: $9/kg, E_hull: 0.249eV/atom, Dynamically stable | Discovered in 3 AI iterations | Fe4Co2Mn2B4 is a promising candidate for magnetic applications due to its high Curie temperature and magnetic density combined with low cost and dynamic stability. The elevated energy above hull suggests that while it can be dynamically stable, it might be metastable thermodynamically, which is a common trade-off in complex magnetic materials. The composition and structure allow for good magnetic properties, but further exploration to reduce e_hull or stabilize the phase could improve practical applicability.