Figure 8

An example of normal spinel oxide unit cell geometry (Co16Ni8O32). The red spheres are oxygen ions, gray are nickel ions in tetrahedral sites and blue are cobalt ions in octahedral sites.

An example of normal spinel oxide unit cell geometry (Co16Ni8O32). The red spheres are oxygen ions, gray are nickel ions in tetrahedral sites and blue are cobalt ions in octahedral sites.