The composition profiles of the three architectures in Figure confirm the existence of concentration gradients in the final layered oxide. There were significant increases in Ni content and corresponding decreases in Mn and Co content between 0.25 and 0.6-0.7 μm from the particle surface across all architectures. In this region, the Ni ratios changed from being lower than the average elemental content measured in the corresponding particle (Figure ) for the whole sample by Shin et al., to being higher closer to the particle center (Figure and Table ). The opposite trend was observed for Co and, especially, Mn. The compositional profiles oscillated below the ensemble average beyond 0.6-0.7 μm from the particle surface toward the center. Distinct shape differences in the elemental profiles occurred, with oscillations increasing in magnitude from 63%Ni to 86%Ni. When comparing the elemental intensity signals in Figure to the elemental ratios in Figure , it was clear that oscillation occurred in all signals, but seemingly to a greater extent for Co. It is interesting to note that the two particles measured showed qualitatively similar oscillations in elemental ratios, suggesting a remarkable consistency between particles is possible with these synthetic methods.