Abstract
We investigate the physical properties of the Shastry-Sutherland lattice material . Neutron diffraction, magnetic susceptibility, and specific heat measurements reveal antiferromagnetic order below 1.65 K. The magnetic order is found to be a magnetic structure with the magnetic moments lying in the Shastry-Sutherland lattice planes comprising the tetragonal crystal structure of . The ordered moment for this structure is 1.9(1) per Nd ion. Inelastic neutron scattering measurements reveal that the crystal field ground state doublet is well separated from the first excited state at 8 meV. The crystal field Hamiltonian is determined through simultaneous refinement of models with both the LS coupling and intermediate coupling approximations to the inelastic neutron scattering and magnetic susceptibility data. The ground state doublet indicates that the magnetic moments lie primarily in the basal plane with magnitude consistent with the size of the determined ordered moment.
1 More- Received 18 March 2021
- Accepted 7 June 2021
- Corrected 19 April 2022
DOI:https://doi.org/10.1103/PhysRevMaterials.5.064418
©2021 American Physical Society
Physics Subject Headings (PhySH)
Corrections
19 April 2022
Correction: The magnetic space group label in the caption to Fig. 4, the last paragraph of Sec. IV, and Table VII in Appendix D contained an error and has been fixed. Corresponding operator signs in the entries of Table VII have been modified accordingly.