Abstract
We investigate the physical properties of the Shastry-Sutherland lattice material BaNd2ZnO5. Neutron diffraction, magnetic susceptibility, and specific heat measurements reveal antiferromagnetic order below 1.65 K. The magnetic order is found to be a 2-Q magnetic structure with the magnetic moments lying in the Shastry-Sutherland lattice planes comprising the tetragonal crystal structure of BaNd2ZnO5. The ordered moment for this structure is 1.9(1) μB 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.
| Original language | English |
|---|---|
| Article number | 064418 |
| Journal | Physical Review Materials |
| Volume | 5 |
| Issue number | 6 |
| DOIs | |
| State | Published - Jun 2021 |
Funding
We thank A. F. May and B. J. Campbell for useful discussions. This work was supported by the U.S. Department of Energy, Office of Science, Basic Energy Sciences, Materials Sciences and Engineering Division. This research used resources at the Spallation Neutron Source and the High Flux Isotope Reactor, Department of Energy (DOE) Office of Science User Facilities operated by Oak Ridge National Laboratory (ORNL). This study was supported in part by JSPS KAKENHI Grants No. JP20H05276, a research grant from Nippon Sheet Glass Foundation for Materials Science and Engineering (Grant No. 40-37), and Innovative Science and Technology Initiative for Security (Grant No. JPJ004596) from Acquisition, Technology & Logistics Agency (ATLA), Japan. This manuscript has been authored by UT-Battelle, LLC under Contract No. DE-AC05-00OR22725 with the U.S. Department of Energy. The United States Government retains and the publisher, by accepting the article for publication, acknowledges that the United States Government retains a non-exclusive, paid-up, irrevocable, world-wide license to publish or reproduce the published form of this manuscript, or allow others to do so, for United States Government purposes. The Department of Energy will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan .
| Funders | Funder number |
|---|---|
| ATLA | |
| Acquisition, Technology & Logistics Agency | |
| Innovative Science and Technology Initiative for Security | JPJ004596 |
| U.S. Department of Energy | |
| Office of Science | |
| Basic Energy Sciences | |
| Nippon Sheet Glass Foundation for Materials Science and Engineering | 40-37 |
| Division of Materials Sciences and Engineering | |
| Japan Society for the Promotion of Science | JP20H05276 |