111Cd hyperfine probes in YBaCuO

Different techniques like implantation or in-diffusion have been applied to place the hyperfine probe¹¹¹Cd at YBaCuO lattice sites. In this paper different experiments are reviewed which show that the standard PAC-probe can be placed at any regular site of YBaCuO. The PAC-parameters of these sites are collected and discussed. This work was supported by the BMFT, contract: FKZ 13 N 54930