Fig. 3: The influence of different intrinsic parameters on optical static refractive index.
From: Quantitative prediction of optical static refractive index in complex oxides

a Number of d-electrons and unoccupied orbitals for R and M-site atoms, b three types of different chemical bond lengths, c Lattice constants and crystal volume of the material, d coordination number for R and M-site atoms for representative cubic pyrochlore Gd2Zr2O7. e Temperature-dependent refractive index for various examined pyrochlore oxide materials.