Superconducting quantum interference device detection of acoustic nuclear quadrupole resonance ofSb121andSb123in antimony metal

The acoustic nuclear quadrupole resonance (ANQR) spectra and spin-lattice relaxation times of ${}_{}{}^{121}{}_{}{}^{}\mathrm{Sb}$ and ${}_{}{}^{123}{}_{}{}^{}\mathrm{Sb}$ in antimony metal have been measured by means of the superconducting quantum interference device (SQUID) acoustomagnetic spectrometer. Novel features of the SQUID-detected ANQR spectra are described. In particular, we report the first measurement of magnetic field-dependent nuclear spin relaxation rates in a bulk metal.