Predict the magnetic ordering temperature (Curie, or Néel for antiferromagnets) from classical Heisenberg Monte Carlo on TB2J exchange couplings. Tc_K is the susceptibility peak in a supercell twice the longest kept coupling wide; Tc_mean_field_K is the mean-field upper bound. Also returns the magnetization curve and reference_ordering_overlap: near 1 when the couplings favor the SCF's own collinear order. Below 0.5 the response carries a warning: Tc belongs to a different ordering, because either the SCF started from the wrong one (check with /dft/magnetic/ordering) or a rigid-spin Heisenberg model cannot describe the magnet (e.g. L1₀ FePt, whose ferromagnetism is mediated by induced Pt moments). Shares its calculation with /dft/magnetic/exchange at the same settings. Key descriptor for permanent-magnet screening alongside MAE.
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A guide for new researchers: the magnet-relevant services on Ouro, what each is good and bad at (including on rare-earth compounds), how long it takes, and how to tier your search so DFT only runs on compounds that earned it.
Ouro DFT now predicts Curie temperatures, and MAE runs at a converged cutoff
A dedicated Tc route on Monte Carlo exchange, a 100 Ry default that fixes a 50% MAE overshoot, faster magnetic paths, and validation on Fe, NiO and FePt.