Investigation of the Two Consecutive Phase Transitions in the Ruthenate Na3RuO4
Ruthenates show peculiar magnetic behavior, owing to their remarkably "soft" magnetic moments caused by the proximity of the non-magnetic J = 0 state in Ru4+ [1] and strong Ru-O covalency in the case of Ru5+ [2]. Geometrical frustration of the exchange couplings may be an additional ingredient of this interesting physics. In localized magnets, frustration typically acts to reduce ordered moments by quantum fluctuations, thus rendering spins even more soft. Here, we seek to explore such a scenario in the representative Ru5+ compound, Na3RuO4, that shows signatures of the geometrical frustration. [1] G. Khaliullin, Phys. Rev. Lett. 111, 197201 (2013). [2] A. Hariki et al. Phys. Rev. B 96, 155135 (2017).
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BADER Vera; RITTER Clemens and TSIRLIN Alexander. (2019). Investigation of the Two Consecutive Phase Transitions in the Ruthenate Na3RuO4. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.5-31-2641
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