Fig. 5: Theoretical analysis by ab-initio simulation.
From: Machine learning autonomous identification of magnetic alloys beyond the Slater-Pauling limit
a Fe local magnetic moment in the Fe75Co25X1 system, where X is a transition metal. The center of the color bar (white part) corresponds to the Fe local magnetic moment in Fe75Co25. Ir and Pt (and other elements around them in the periodic table) enhance the Fe local magnetic moment. b Co local magnetic moment in the Fe75Co25X1 system. Ir and Pt (and other elements around them) also enhance the Co local magnetic moment. c Lattice constant of the Fe75Co25X1 system. Elements with large atomic numbers tend to expand the lattice constant of Fe75Co25. d Local magnetic moments of different X elements in the Fe75Co25X1 system. Positive and negative signs respectively mean parallel and anti-parallel magnetic moments with respect to the Fe and Co local magnetic moments. Paramagnetic elements, including Ir and Pt, have smaller magnetic moments than ferromagnetic elements (Fe, Co, and Ni).
