AMSET estimates the electronic relaxation times by summing scattering rates from four different processes, viz. acoustic deformation potential (ADP), polar optic phonon (POP), piezoelectric (PIE), and ionised impurity (IMP) scattering, requiring a range of material properties to be calculated. Deformation potentials were computed by performing a series of single-point energy calculations on deformed structures, generated using AMSET, with PBEsol. High-frequency dielectric constants ε ε ε ∞ , Born effective charges Z Z Z * and piezoelectric moduli were determined using DFPT. For these calculations, convergence tests indicated that 3× denser k k k-point sampling along each reciprocal-lattice vector compared to the "base" meshes used for geometry optimisation were required to converge the ε ε ε ∞ . The Z Z Z * were used to determine the infrared (IR) activities of the phonon modes at q q q = Γ, evaluated with Phonopy, and to calculate the polar optic phonon (POP) frequency. The elastic constants C i j and ionic contribution to the dielectric constant, ε ε ε ionic , were computed using PBEsol and the finite-differences routines in VASP, the latter of which was used to obtain the static dielectric constant