| Автор | R S Klein |
| Автор | G E Kugel |
| Автор | B Hennion |
| Дата выпуска | 1996-02-26 |
| dc.description | Two crystals of with 1% and 5% Li have been investigated by inelastic neutron scattering. The transverse acoustic and lowest optic modes have been measured in the [100] direction from room temperature down to 10 K. The wavevector dependences of the mode softening, damping and intensities are represented. The measured dispersions are analysed in the framework of an extended shell model assuming an anisotropic non-linear polarizability of the oxygen ion. On the basis of this model, structure factors are calculated and compared with measured phonon intensities. Conclusions on the influence of the lithium substitution on the non-linear character of the polarizability are discussed. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | Inelastic neutron scattering measurements on the transverse acoustic and lowest optic modes in doped with lithium |
| Тип | paper |
| DOI | 10.1088/0953-8984/8/9/004 |
| Electronic ISSN | 1361-648X |
| Print ISSN | 0953-8984 |
| Журнал | Journal of Physics: Condensed Matter |
| Том | 8 |
| Первая страница | 1109 |
| Последняя страница | 1121 |
| Выпуск | 9 |
