Abstract
Single crystals of Nd2O3 were grown and characterized using neutron scattering and thermodynamic measurements. Nd2O3 has long-range antiferromagnetic order below TN=0.55 K and specific-heat measurements have demonstrated that a significant amount of the magnetic entropy is released above TN. Inelastic neutron scattering experiments reveal a magnetic mode(s) with little dispersion peaked at ≈0.37meV that is of greatest intensity below TN but persists above 2TN. This persistence of dynamic correlations is likely related to frustrated interactions associated with the nearly ideal stacked triangular lattice geometry of Jeff=12 spins on Nd3+ ions. The magnetization is observed to be strongly anisotropic at all temperatures due to crystal field effects, with easy-plane anisotropy observed. A noncompensated magnetic structure is inferred from the temperature dependence of the magnetization when a magnetic field of sufficient strength is applied within the basal plane near TN, and the evolution of the long-range order is summarized in a temperature-field phase diagram.
| Original language | English |
|---|---|
| Article number | 054434 |
| Journal | Physical Review B |
| Volume | 102 |
| Issue number | 5 |
| DOIs | |
| State | Published - Aug 1 2020 |
Funding
We thank G. Halasz and H. Zhang for useful comments and discussions. This research was supported by the U.S. Department of Energy, Office of Science, Basic Energy Sciences, Materials Science and Engineering Division. A portion of this research used resources at the Spallation Neutron Source, a DOE Office of Science User Facility operated by the Oak Ridge National Laboratory. This manuscript has been co-authored by the employees of ORNL, which is managed by UT-Battelle, LLC, under Contract No. DE-AC05-00OR22725 for the U.S. Department of Energy. The U.S. Government retains and the publisher, by accepting the article for publication, acknowledges that the U.S. Government retains a nonexclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this manuscript, or allow others to do so, for U.S. 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 |
|---|---|
| U.S. Department of Energy | |
| Office of Science | |
| Basic Energy Sciences | |
| Oak Ridge National Laboratory | DE-AC05-00OR22725 |
| Division of Materials Sciences and Engineering |