Magnetocrystalline Anisotropy of Fe-based $L{1}_0$ Alloys: Validity of Approximate Methods to Treat the Spin-Orbit Interaction

M. Blanco-Rey, J. I. Cerda, A. Arnau

First-principles calculations are used to gauge different levels of approximation to calculate the magnetocrystalline anisotropy energies (MAE) of five $L{1}_0$ FeMe alloys (Me=Co, C…