Measurement of acoustic phonons in UBe13.
Published Web Locationhttps://doi.org/10.1103/physrevb.33.6488
The low-energy phonon dispersion of UBe13 has been measured by means of inelastic neutron scattering at room temperature and 10 K and elastic constants have been extracted. They are consistent with values obtained by scaling from pure beryllium, and the angular variation is almost isotropic. The lattice contribution to the low-temperature specific heat has been calculated from these data and is compared with the measured specific heats in the literature. © 1986 The American Physical Society.