F19 Nuclear Acoustic Resonance in Impurity Doped RbMnF3

An experimental study of the F19 nuclear acoustic resonance abosrption spectrum of RbMnF3 doped with K++, Mg++, Co++, Ni++ and Fe++ impurities in the antiferromagnetic phase is presented. The spectra are interpreted as arising from only those nuclear sites in the immediate vicinity of a symmetry breaking impurity ion or crystal defect.