Spin Reorientation in Antiferromagnetic Layered FePt₅P

FePt5P, a substitutional variant of the anti-CeCoIn5 structure type in the space group P4/mmm, was synthesized by a high-temperature solid-state method and structurally characterized by X-ray diffraction. FePt5P contains layers of FePt12 clusters formed by magnetically active Fe and heavy Pt with strong spin-orbit coupling (SOC); the layers are separated by P atoms. The various Fe–Pt distances in FePt12 clusters generate complex magnetic orders...