MnFe 2 O 4 and ZnFe 2 O 4 are known to have a thermallydependent degree of inversion . This is reflected in Figure as many partially inverse structures are within a thermally accessible energy. At room temperature the thermal energy kT ≈ 25 meV atom -1 and as such configurations lower than this are expected to be accessible at T = 298 K. Higher energy structures can in theory be accessed at higher temperatures and kinetically trapped to allow for higher degrees of inversion. Experimentally this would be shown as a higher average degree of inversion.