Hyperfine interactions of ¹¹¹Cd in TiO₂ (Rutile) studied by perturbed angular correlations

Abstract

Abstract The time‐differential perturbed angular correlation for 111 Cd nuclei has been measured after 111 In implantation into polycrystalline TiO 2 . The observed perturbation functions are characterized by a well‐defined electric field gradient with the quadrupole coupling constant ν Q = 105(1) MHz and the asymmetry parameter η = 0.18(1). We attribute these hyperfine parameters to 111 Cd on the (distorted) substitutional cation site in rutile. The PAC results are compared with those in SnO 2 rutile as well as with X‐ray diffraction, RBS channeling experiments and point charge model calculations including relaxation of the probe atom surrounding.