Abstract
The phonon dispersion curves in superconducting ZrN have been measured in the highsymmetry directions , , and by coherent inelastic neutron scattering at room temperature. Anomalies in the dispersion of the acoustic branches have been detected which are similar to those reported already for the superconducting transition-metal carbides and for TiN. The experimental results are well reproduced by a double-shell model which has also been used to calculate the phonon density of states. The calculated density is in good agreement with the results of time-of-flight measurements and with recent Raman data.
- Received 20 November 1978
DOI:https://doi.org/10.1103/PhysRevB.19.5699
©1979 American Physical Society