Static magnetic order in the triangular lattice of Li&lt;sub&gt;&lt;em&gt;x&lt;/em&gt;&lt;/sub&gt;NiO&lt;sub&gt;2&lt;/sub&gt; (&lt;em&gt;x&lt;/em&gt;≤1): muon-spin spectroscopy measurements

Sugiyama, Jun; Mukai, Kazuhiko; Ikedo, Yutaka; Russo, Peter L.; Nozaki, Hiroshi; Andreica, Daniel; Amato, Alex; Ariyoshi, Kingo; Ohzuku, Tsutomu

doi:10.1103/PhysRevB.78.144412

Static magnetic order in the triangular lattice of Li_xNiO₂ (x≤1): muon-spin spectroscopy measurements

Sugiyama J, Mukai K, Ikedo Y, Russo PL, Nozaki H, Andreica D, Amato A, Ariyoshi K & Ohzuku T

Citation

Sugiyama, J., Mukai, K., Ikedo, Y., Russo, P. L., Nozaki, H., Andreica, D., … Ohzuku, T. (2008). Static magnetic order in the triangular lattice of Li_xNiO₂ (x≤1): muon-spin spectroscopy measurements. Physical Review B, 78(14), 144412 (9 pp.). https://doi.org/10.1103/PhysRevB.78.144412

Persistent URL https://www.dora.lib4ri.ch/psi/islandora/object/psi:19045

In spite of numerous experimental and theoretical reports on LiNiO₂, no consistent picture has emerged of the nature of its ground state. We have investigated the Li_xNiO₂ system (0.1≤x≤1) by means of muon-spin spectroscopy and susceptibility to gain further insight from the effects of varying the magnetic ion concentration. Static magnetic order, most likely to be incommensurate to the spatial lattice period, was found for x≥0.6 at low temperatures (T), while disordered magnetism due to localized Ni moments appears for x=1/2–1/4 and, finally, Li_0.1NiO₂ exhibits almost fully nonmagnetic behavior down to the lowest T measured. The ground state of LiNiO₂ is inferred to be a "static but short-range" A-type antiferromagnetic ordered system, in which the Ni³⁺ moments align ferromagnetically along the c axis in the NiO₂ plane with an incommensurate modulation probably due to canting of the Ni³⁺moments, but align antiferromagnetically between adjacent NiO₂ planes.