Figure 9
From: Magnetism and ion diffusion in honeycomb layered oxide \({\hbox {K}_2\hbox {Ni}_2\hbox {TeO}_6}\)
The temperature dependencies of (a) \(\nu \) and (b) diffusion coefficient for \({\hbox {K}_2\hbox {Ni}_2\hbox {TeO}_6}\). The black dashed line is fit to an Arrhenius equation \(\nu \) = \(A \times \mathrm{exp}(-E_{\mathrm{a}}/k_{\mathrm{B}}T)\), which yield an activation energy of \(E_{\mathrm{a}}\) = 121 (13) meV. Each data point was obtained by fitting the ZF and LF (= 10 and 30 Oe) spectra using Eq. (3). (c) Crystal structure of \({\hbox {K}_2\hbox {Ni}_2\hbox {TeO}_6}\) projection along c-axis. Diffusion paths, K1–K2 (\(s_1\) = 1.674 Å) and K1–K3 (\(s_2\) = 1.923 Å), are illustrated by dot line and solid line, respectively. Figure of crystal structure was created by Diamond version 4.6.3.
