Lithium diffusive behavior in Li&lt;sub&gt;2&lt;/sub&gt;MnO&lt;sub&gt;3&lt;/sub&gt; detected by muon-spin relaxation

Sugiyama, Jun; Nozaki, Hiroshi; Mukai, Kazuhiko; Harada, Masashi; Månsson, Martin; Hillier, Adrian

doi:10.1016/j.ssi.2013.10.039

Lithium diffusive behavior in Li₂MnO₃ detected by muon-spin relaxation

Sugiyama J, Nozaki H, Mukai K, Harada M, Månsson M & Hillier A

Citation

Sugiyama, J., Nozaki, H., Mukai, K., Harada, M., Månsson, M., & Hillier, A. (2014). Lithium diffusive behavior in Li₂MnO₃ detected by muon-spin relaxation. Solid State Ionics, 262, 901-903. https://doi.org/10.1016/j.ssi.2013.10.039

Persistent URL https://www.dora.lib4ri.ch/psi/islandora/object/psi:49641

In a paramagnetic state of Li₂MnO₃, i.e. at temperatures above T_N = 35 K, muon-spin relaxation (μ⁺SR) measurements with zero applied magnetic field (ZF) and longitudinal-field (LF) revealed the presence of a dynamic fluctuation of a nuclear magnetic field due to Li⁺-diffusion. From the motional narrowing behavior of the field distribution width, the Li⁺ ions were found to diffuse mainly along the c-axis through the Li⁺ ion in the [Li_1/3Mn_2/3]O₂ layer. Also, based on the field fluctuation rate, a self-diffusion coefficient of Li⁺ ions (D_Li) at 300 K was estimated as 4.7(4) × 10^− 11 cm²/s with the thermal activation energy Eα = 0.156(3)eV.