Towards Quantum Magnetism with Pr4+ Ions: A Crystal-Field Study
ORAL
Abstract
The Pr4+ based honeycomb antiferromagnet Na2PrO3 has been of recent interest due to its potential to realize Kitaev interactions with rare-earth ions. In this context, the Pr4+ ion has a 4f1 configuration making it a Kramers ion. The single-ion properties of Pr4+ ions were first investigated in PrO2 and BaPrO3, which revealed the equal importance of spin-orbit coupling and crystal-field effects, reducing the separation between the 2F5/2 and 2F7/2 electronic multiplets and requiring an intermediate coupling approach. Overall, few Pr4+ compounds are known. We extended these efforts to explore the single-ion properties of Pr4+ in different compounds such as Na2PrO3, Sr2PrO4, and Li8PrO6. We will present inelastic neutron scattering data for Sr2PrO4 and Li8PrO6 and the resulting Crystal Electric Field analysis that characterize the nature of the magnetic moments in these systems.
*This research used resources at the High Flux Isotope Reactor and Spallation Neutron Source, a DOE Office of Science User Facility operated by the Oak Ridge National Laboratory. The work at Georgia Tech was supported by the National Science Foundation through Grant No. NSF-DMR-1750186 and the Beckman Foundation as part of a Beckman Young Investigator Award.
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Presenters
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Jensen M Kaplan
- Georgia Institute of Technology