Abstract:
Samples of ZrO2 ceramics with different concentrations of impurity titanium ions were
synthesized by mixing zirconium and titanium oxide powders in different mass ratios. The Xray diffraction analysis was used to determine the phase composition, lattice parameters, and
crystallite size of the ceramics with varying dopant concentrations. Upon irradiation of the samples
with 220 MeV Xe ions to a fluence of 1010 ions/cm2
, a decrease in the intensity of the pulsed
cathodoluminescence band at 2.5 eV was observed. Additionally, ion irradiation resulted in the
emergence of a new thermoluminescence peak at 450–650 K attributed to radiation-induced traps
of charge carriers. Further analysis revealed that the thermoluminescence curves of samples
irradiated with electrons and ions comprise a superposition of several elementary peaks. Notably,
a complex non-monotonic dependence of cathodo- and thermoluminescence intensity on titanium
concentration was observed, suggesting the influence of concentration quenching and the presence
of tunneling transitions.
