Application of $\text{}^{172}$Yb in Perturbed Angular Correlation Measurements

The radioactive decay of $\text{}^{172}$Lu → $\text{}^{172}$Yb appears to be suitable for time-differential perturbed angular correlation measurements of quadrupole interaction. The technique was applied to study various phenomena in three compounds: Yb$\text{}_{3}$S$\text{}_{4}$, YbPO$\text{}_{4}$, Yb$\text{}_{2}$Co$\text{}_{3}$Ga$\text{}_{9}$. We were able to distinguish between Yb$\text{}^{2+}$ and Yb$\text{}^{3+}$ ions occupying different positions in the crystal lattice of Yb$\text{}_{3}$S$\text{}_{4}$. Crystal electric field parameters reproduced the temperature dependence of the quadrupole interaction of Yb in YbPO$\text{}_{4}$. Finally, the influence of hybridization on the 4f quadrupole moment in Yb$\text{}_{2}$Co$\text{}_{3}$Ga$\text{}_{9}$ is evidenced.