Lattice-Location Study of Hf Implanted in Ni

Abstract
The channeling technique has been used to study the lattice location of Hf implanted in single-crystal Ni samples. Results indicate that about one-half the Hf atoms occupy regular Ni lattice sites, the remainder being in some form of precipitate. It was found that annealing the sample above 600 °C promotes further precipitation of the impurity. These results are compared with recent hyperfine-interaction experiments on the same system.