| Автор | I Heilmann |
| Автор | N B Olsen |
| Дата выпуска | 1977-05-28 |
| dc.description | The intensity I of the <sup>119</sup>Sn Mossbauer line in SnI<sub>4</sub> was measured from 100K to 300K at atmospheric pressure and at 200K at a pressure of 2 kbar. At low temperatures, the slope delta of lnI versus temperature is independent of temperature. Applying a Debye model with rigid motion of the SnI<sub>4</sub> molecules, one obtains an unusually low value of the Debye temperature ( theta =49K) which, however, is confirmed by ultrasonic measurements (57K). Above 170K, an increasing deviation from linearity of lnI versus temperature is observed. Furthermore, at higher pressure, a large increase of the Mossbauer intensity at 200K is observed. These two observations indicate that volume changes strongly influence the lattice dynamics. They are explained by a quasiharmonic model using a Gruneisen parameter equal to gamma =4+or-1.5. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | Dynamical properties of <sup>119</sup>Sn in crystalline SnI<sub>4</sub> investigated by the Mossbauer effect |
| Тип | paper |
| DOI | 10.1088/0022-3719/10/10/019 |
| Print ISSN | 0022-3719 |
| Журнал | Journal of Physics C: Solid State Physics |
| Том | 10 |
| Первая страница | 1775 |
| Последняя страница | 1780 |
| Аффилиация | I Heilmann; Phys. Lab. I, HC Orsted Inst., Univ. of Copenhagen, Copenhagen, Denmark |
| Аффилиация | N B Olsen; Phys. Lab. I, HC Orsted Inst., Univ. of Copenhagen, Copenhagen, Denmark |
| Выпуск | 10 |
