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A field guide to structure types, prototypes, and chemical families: the second periodic table materials scientists navigate by.
Submissions are open for the RE-free permanent-magnet leaderboard: submit a CIF, get scored automatically on Tc, magnetization, and supply-chain risk.
Complete verification of the MnBi1-xGex permanent-magnetism claims: parent control and Ge-substituted candidate both done (MC Tc ~430-450 K both; Ge MAE +0.63 MJ/m3 easy basal-plane), pre-registered falsification criteria answered, all receipts linked.
PbTiO3, KNN, GaMo4Se8 and a ferrierite control from COD multi-T CIFs: transition anomalies carry single-axis dominance and transition-anchored alpha(T) curvature; framework NTE is sign-coherent and linear. Family controls CaTiO3/BiFeO3 close the "orthorhombic perovskites just do that" objection.
Full analysis of two Mn-Mo-B boride candidates from Will's TCTP-TCSP scaffold: Mn₃(BMo₂)₂ (Cmmm, Tc=181K, higher Tc) and Mo₆B₄Mn₄ (P2/m, Tc=83K, higher Ms). Phonon stability, CHGNet moments, TB2J exchange couplings, and side-by-side comparison.
If you train a model on the Crystallography Open Database today, the inorganic structures in your training set have a mean deposition year of 1996. Half were deposited by 2000. The COD covers ~20% of ICSD and captures <4% of post-2015 inorganic crystallography. What does that mean for ML?