De Haas-van Alphen oscillations in the magnetoacoustic attenuation in single crystals of antimony were measured at 1.2°K in the range of fields from 4000 to 9100 G for the field in the $x-z$, $y-z$, and $x-y$ planes. In addition to the carriers observed by Shoenberg, new carriers are seen. Evidence of nonellipsoidal behavior of the Fermi surface of the new carriers is observed.

• Received 11 July 1962

DOI:https://doi.org/10.1103/PhysRev.129.18