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Nuclear magnetic resonance (NMR) measurements on single crystals of Ba₂LiOsO₆ were carried out to test the universality of theoretical models based on anisotropic exchange interactions ^[1]. The results are compared with NMR findings on its isostructural and isovalent compound Ba₂NaOsO₆. Ba₂LiOsO₆ displays significant line broadening at low temperature, but no well-defined line splitting like its Na counterpart ^[2]. In addition, the spin-lattice relaxation and linewidth of its spectrum undergoes an abrupt change at 6 T. The implications of these findings will be discussed.

[1] Chen, Gang, Rodrigo Pereira, and Leon Balents. Physical Review B 82.17 (2010): 174440.
[2] Lu, L., et al. Nature communications 8 (2017): 14407.