Dilute-carbon defect-chemistry entry for the RE-Free Permanent Magnet Leaderboard: 4x4x2 L1_0 tau-MnAl supercell (a=2.792 A, c=3.584 A, literature-parametrized tau phase) with one C interstitial at the octahedral (1/2,1/2,0)-type site (4 Mn + 2 Al coordination), Mn32Al32C = 1.5 at% C, matching the ~1-2 at% C that stabilizes the metastable tau phase in MnAl-C magnets. Companion to the no-C control supercell (file 54f0b572). Built with pymatgen; validated: P4/mmm preserved, min pair distance 1.79 A, all sites ordered.
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Magnetic anisotropy energy
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Exchange couplings (TB2J)
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Relax a crystal structure and publish results
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Ground-state SCF
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Structure sanity card for a CIF
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Structure relaxation via NequIP-OAM-XL
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DFT structure relaxation
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Crystal-Likeness Score (synthesizability) from CIF
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Energy Gate Check
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Magnetic ordering (FM vs AFM)
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Synthesis report from CIF file
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Band structure
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Check phonon stability
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Charge density
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Density of states
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Band gap
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Projected density of states
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