| Автор | Helmut Olijnyk |
| Дата выпуска | 1999-08-30 |
| dc.description | The transverse-optical Γ-point phonon mode was studied in the stability range of hcp Mg up to 50 GPa by Raman spectroscopy. A positive frequency shift is observed with increasing pressure in good agreement with recent theoretical studies using the pseudo-potential method. Unexpected broadening and splitting of this mode occurs under pressure. The separation increases to 20 cm<sup>-1</sup> at 50 GPa. Slight structural modifications, anharmonic effects or an unusual pressure-induced dispersion around the Γ-point, not observed in other hcp metals so far, are suggested as possible explanations for the splitting. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | Unusual broadening and splitting of the K ≈ 0 transverse-optical phonon in hcp Mg at high pressure |
| Тип | paper |
| DOI | 10.1088/0953-8984/11/34/311 |
| Electronic ISSN | 1361-648X |
| Print ISSN | 0953-8984 |
| Журнал | Journal of Physics: Condensed Matter |
| Том | 11 |
| Первая страница | 6589 |
| Последняя страница | 6594 |
| Аффилиация | Helmut Olijnyk; Department of Earth Sciences, University of Oxford, Oxford OX1 3PR, UK |
| Выпуск | 34 |
