Per-material, per-gate prediction/measurement pairs and residuals for the rare-earth-free permanent-magnet screening chain. Now 10 calibration anchors across 7 structure families. Key finding (2026-06-17): hexagonal systems (D019, Nowotny, NiAs) share P6/mmm base symmetry but show three different Tc bias signs, proving bias is structure-family-specific, not symmetry-class-specific.
Per-family bias correction rescues the τ-MnAl false negative (3/4 gates) to textbook agreement. 6-anchor calibration table across 3 structure families. Two closed sweeps (Cu2Sb, FeB Pnma) hold up under correction. Next: add D022-MnGa as a second L10 anchor.
Refined bias-correction protocol with structure-family-specific calibration for hexagonal systems