Nuclear-orientation measurements at temperatures down to ∼10 mK were performed on ${}_{}{}^{199}{}_{}{}^{}\mathrm{Au}$, ${}_{}{}^{191}{}_{}{}^{}\mathrm{Pt}$, and ${}_{}{}^{131}{}_{}{}^{}\mathrm{I}$ in ${\mathrm{PtTe}}_2$. The electric-field gradients of Au, Pt, and I in ${\mathrm{PtTe}}_2$ were determined to be +5.6(0.6)×${10}^{17}$, +10(5)×${10}^{17}$, and -3.7(1.7)×${10}^{17}$ V/${\mathrm{cm}}^2$, respectively.

• Received 12 July 1991

DOI:https://doi.org/10.1103/PhysRevB.45.7474