Abstract
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 xz, yz, and xy 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.