In order to enhance the resolution of CF peaks in the blue to UV range, the CT contribution was removed by systematic subtraction of the spectrum of undoped zirconium titanate. The wavenumbers of CF peaks and band width (d), the inferred values of average (cubic) Dq and Racah B35 as well as the calculated CFSE and nephelauxetic ratio (b35) are listed in Table 3. For simplicity sake, CF peaks are described as the symmetry of octahedral site would be cubic, despite the point symmetry of the (Zr,Ti)O6 is C2. Just in case of a conspicuous peak splitting, the terminology is referred to a lower symmetry group.