Exploring Crystal Symmetry for the Determination of EFG-Tensors from NMR-NQR Rotation Patterns

Abstract

In contrast to the properties of the symmetry of the nucleus under consideration the information contained in the crystal symmetry is rarely used for the determination of EFG-tensors from NMR-NQR rotation patterns. This information is, however, extremely useful since already the presence of a single symmetry different from Ī provides all necessary information in a single rotation pattern. This is the case for all Bravais lattices except the triclinic one. It is shown how the crystal symmetry can be explored even in the case of an arbitrary direction of the rotation axis with respect to the crystal axes.