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Crystal-field effects in Er3Ru4Al12 with a distorted kagome lattice
Ist Teil von
Physical review. B, 2020-03, Vol.101 (9), p.1
Ort / Verlag
College Park: American Physical Society
Erscheinungsjahr
2020
Quelle
American Physical Society Journals
Beschreibungen/Notizen
We report on the magnetic and elastic properties of Er3Ru4Al12 in static and pulsed magnetic fields up to 58 T. From the ultrasound results, we obtain evidence for a phase transition at 2 K related to magnetic ordering. Furthermore, in the paramagnetic state, Er3Ru4Al12 shows pronounced anomalies in the magnetization and elastic moduli as a function of temperature and magnetic field. We explain our findings using a crystal-electric-field (CEF) model that includes quadrupolar interactions and propose a CEF level scheme for this material. However, the CEF effects cannot explain all field-induced anomalies, which indicates that refined models are needed for explaining these.