Magnetic ground state of the cubic perovskite Ba3NiNb2O9

Yamamoto, Shingo; Aslan Cansever, G.; Gottschall, Tino; Uhlarz, Marc; Blum, C. G. F.; Wolter-Giraud, A.; Aswartham, S.; Wurmehl, S.; Herrmannsdörfer, Thomas; Seiro, S.

Magnetic ground state of the cubic perovskite Ba₃NiNb₂O₉

Yamamoto, S.; Aslan Cansever, G.; Gottschall, T.; Uhlarz, M.; Blum, C. G. F.; Wolter-Giraud, A.; Aswartham, S.; Wurmehl, S.; Herrmannsdörfer, T.; Seiro, S.

We investigated the magnetic spin-1 perovskite Ba₃NiNb₂O₉ by means of complex ac susceptibility measurements at extreme sample conditions. Ba₃NiNb₂O₉ with cubic perovskite structure (Pm-3m) has a random occupation of Nb(66 %)/Ni(33 %) at the center of the cubic perovskite unit cell. Different from the isostoichiometric sister compound, Ba₃NiNb2O₉ with P-3m1 structure which shows both uud-spin configuration and multiferroicity, the magnetic properties of the investigated system have not been studied below 2 K yet. For our single crystals, we observe a spin freezing transition at around 0.7 K. Furthermore, the peak of 𝜒’ is suppressed by applying an external dc field of 200 mT and 𝜒” shows a sudden onset near the freezing temperature.

Involved research facilities

High Magnetic Field Laboratory (HLD)

Poster
DPG-Frühjahrstagung der Sektion Kondensierte Materie (SKM) gemeinsam mit der European Physical Society (CMD), 11.-16.03.2018, Berlin, Deutschland

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