Abstract
The electric-field gradient (EFG) at nuclei dilutely substituting an cation site in delafossites has been measured using a perturbed-angular-correlation technique. The radioactive isotope was used as the hyperfine probe and introduced into the samples by thermal diffusion. The EFG’s measured using a probe are compared with those measured using the probe and with the calculated values using the point-charge model including the local distortion introduced by the probe. The results are also discussed in terms of a previously observed correlation between the electric-field gradient and the cation-oxygen bond length in these delafossites and other binary oxides.
- Received 10 February 1998
DOI:https://doi.org/10.1103/PhysRevB.58.2563
©1998 American Physical Society