Abstract

Nuclear acoustic resonance has been applied to the study of an aluminum-0.87-at.%-zinc single-crystal alloy. For the magnetic field along [111], satellite lines were observed at \ifmmode\pm\else\textpm\fi{} 57 Oe and \ifmmode\pm\else\textpm\fi{} 114 Oe relative to the main line. These satellites were attributed to aluminum nuclei which are nearest neighbors to zinc impurities. The orientation of the principal axes of the electric-field-gradient tensor was determined for nearest neighbors. The main $^{27}\mathrm{Al}$ resonance absorption and dispersion signals were observed over the temperature range of 2.5-200 K. These signals exhibited temperature-dependent changes in shape which are explained by the theories of Buttet and Fedders.

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