Abstract
| Tuning the electrical properties of materials by controlling their doping content has been
utilized for decades in semiconducting oxides. Here, an atomistic view is successfully employed to
obtain local information on the charge distribution and point defects in Cd-doped SnO$_2$. We present a
study that uses the time-differential perturbed gamma–gamma angular correlations (TDPAC) method
in samples prepared by using a sol–gel approach. The hyperfine field parameters are presented as
functions of the annealing temperature in pellet samples to show the evolution of incorporating Cd
dopants into the crystal lattice. Additionally, the system was characterized with X-ray fluorescence,
electron dispersive spectroscopy, and scanning electron microscopy after the probe nuclei $^{111}$In($^{111}$Cd)
decayed. The TDPAC results reveal that the probe ions were incorporated into two different local
environments of the SnO$_2$ lattice at temperatures up to 973 K for cation substitutional sites. |