Literature-parametrized L1_0 (CuAu-I type) tau-MnAl cell: a=2.792 A, c=3.584 A, c/a=1.284. Baseline structure for Gate 0 verification of the MnAl-C system studied by Özelt et al. (ML-assisted interface analysis in MnAl-C, MSE 2024). Built with pymatgen; literature tau-MnAl: Tc ~ 620 K, ferromagnetic.