| Автор | Ingrid Petri |
| Автор | Philip S Salmon |
| Автор | W Spencer Howells |
| Дата выпуска | 1999-12-20 |
| dc.description | The change in topology with increasing temperature of liquid GeSe<sub>2</sub> was studied by using neutron diffraction to measure the Bhatia-Thornton number-number partial structure factor, S<sub>NN</sub>(Q), where Q is the scattering vector. As the temperature is raised from 800 to 1100 °C there is a broadening but little other change in the peaks describing the local coordination environment. There is, however, a collapse of the intermediate range atomic ordering of the network associated with the Ge-Ge correlations as manifest by a substantial reduction in the height of the first sharp diffraction peak and a shift in its position from 0.99(1) to 1.05(1) Å<sup>-1</sup>. The changes in the structure with increasing temperature mimic those observed as the composition of liquid GeSe<sub>2</sub> is changed to the GeSe stoichiometry by the addition of germanium. The significance of the results for recent Car-Parinello type ab-initio molecular dynamics simulations is briefly discussed. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | Change in the topology of the glass forming liquid GeSe<sub>2</sub> with increasing temperature |
| Тип | paper |
| DOI | 10.1088/0953-8984/11/50/314 |
| Electronic ISSN | 1361-648X |
| Print ISSN | 0953-8984 |
| Журнал | Journal of Physics: Condensed Matter |
| Том | 11 |
| Первая страница | 10219 |
| Последняя страница | 10227 |
| Выпуск | 50 |
