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The magnetoacoustic pulse-echo method has been applied to a study of the Fermi surface of aluminum, using 350-Mc/sec longitudinal sound waves. Single-crystal samples were studied with the sound propagation along the three principal crystallographic directions. A considerable variety of oscillation periods have been observed. The experimental results are presented and discussed with reference to several models. A redetermination of the low-temperature adiabatic elastic moduli of aluminum from ultrasonic pulse-echo velocity measurements has yielded values which, though differing from earlier published values, give a much better correlation of our data with the Fermi surface models. Some rough estimates are made of the electron relaxation times for the crystals used.
Kamm et al. (Mon,) studied this question.