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Spin Reorientation in Antiferromagnetic Layered FePt5P



Xin Gui, Madalynn Marshall, Ranuri Dissanayaka Mudiyanselage, Ryan Klein, Qiang Chen, Qiang Zhang, William Shelton, Haidong Zhou, Craig Brown, Huibo Cao, Martha Greenblatt, Weiwei Xie


FePt5P, a new substitutional variant of the CeCoIn5 structure type in space group P4/mmm, was synthesized by 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 in FePt5P. According to temperature-dependent magnetic and specific heat measurements, FePt5P shows a stripe-type antiferromagnetic order at TN 90 K, which is also confirmed by resistivity measurements. Moreover, a spin reorientation occurs at 74 K and 68 K in and out of the ab-plane based on the specific heat measurements. The temperature-dependent neutron powder diffraction patterns demonstrate the antiferromagnetic order in FePt5P, and the spins orientate up to 58.4° with respect to the c-axis at 10 K. First principles calculations of FePt5P show the band splitting at the Fermi level by strong spin-orbit coupling (SOC) and the s-d hybridization between P and Fe/Pt electrons enhance the structural stability and affect the magnetic ordering.
ACS Applied Electronic Materials




Gui, X. , Marshall, M. , Dissanayaka Mudiyanselage, R. , Klein, R. , Chen, Q. , Zhang, Q. , Shelton, W. , Zhou, H. , Brown, C. , Cao, H. , Greenblatt, M. and Xie, W. (2021), Spin Reorientation in Antiferromagnetic Layered FePt5P, ACS Applied Electronic Materials, [online],, (Accessed April 15, 2024)
Created July 30, 2021, Updated March 22, 2024