| Автор | R I Sharp |
| Дата выпуска | 1969-03-01 |
| dc.description | Measurements of the frequencies of the normal modes of vibration of niobium at 296 °K have been made by inelastic neutron scattering techniques. Results are presented for several hundred phonons with wave vectors at general positions in the [11, macron0] reciprocal lattice plane. The phonon dispersion relations in symmetry directions agree well with the previous work of Nakagawa and Woods. The measured frequencies cannot be fitted well by tensor force-constant models even when the range of the forces extends to tenth-nearest neighbours, but the critical points in the phonon density of states derived from the eighth-neighbour model agree with those observed in superconducting tunnelling experiments, and the calculated Debye temperature also agrees quite well with measured values. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | The lattice dynamics of niobium I. Measurements of the phonon frequencies |
| Тип | paper |
| DOI | 10.1088/0022-3719/2/3/306 |
| Print ISSN | 0022-3719 |
| Журнал | Journal of Physics C: Solid State Physics |
| Том | 2 |
| Первая страница | 421 |
| Последняя страница | 431 |
| Аффилиация | R I Sharp; Cavendish Laboratory, Cambridge |
| Выпуск | 3 |
