High-Frequency Magnetoacoustic Measurements in Indium and Lead

Abstract

Magnetoacoustic measurements at frequencies up to 270 Mc/sec have been made on high-purity indium and lead single crystals. Automatic data recording was employed, the attenuation being obtained directly as a function of $\frac{1}{H}$. Well-defined periodic behavior was observed for both metals, enabling accurate extremal dimensions of the respective Fermi surfaces to be obtained. The results agree reasonably well with the predictions of the free-electron model.