Micro- and macroscopic magnetism in Li&lt;sub&gt;&lt;em&gt;x&lt;/em&gt;&lt;/sub&gt;NiO&lt;sub&gt;2&lt;/sub&gt;

Mukai, K.; Sugiyama, J.; Ikedo, Y.; Russo, P.L.; Andreica, D.; Amato, A.; Ariyoshi, K.; Ohzuku, T.

doi:10.1016/j.jpowsour.2008.09.069

Micro- and macroscopic magnetism in Li_xNiO₂

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

Citation

Mukai, K., Sugiyama, J., Ikedo, Y., Russo, P. L., Andreica, D., Amato, A., … Ohzuku, T. (2009). Micro- and macroscopic magnetism in Li_xNiO₂. Journal of Power Sources, 189(1), 665-668. https://doi.org/10.1016/j.jpowsour.2008.09.069

Persistent URL https://www.dora.lib4ri.ch/psi/islandora/object/psi:17320

Both macro- and microscopic magnetic nature of Li_xNiO₂ (0.1 ≤ x ≤ 1) were studied by susceptibility (χ) and muon-spin rotation and relaxation (μ⁺SR) measurements in order to understand the change in magnetism of Li_xNiO₂ with x. The χ measurements showed the presence of spin-glass-like freezing at T_f ∼ 11 K for the samples in the whole x range measured. This implies that the macroscopic magnetism is not sensitive to x, although the crystal structure and average oxidation state of the Ni ions of Li_xNiO₂ alter as a function of x. On the other hand, the microscopic magnetism of Li_xNiO₂ is found to be quite different from the macroscopic one. That is, a static antiferromagnetic ordered phase appears at low T for the samples with 0.6 ≤ x ≤ 1, while a spin-glass-like disordered phase presents for the 0.25 ≤ x ≤ 0.5 samples below 10 K.