| Автор | D M Pickup |
| Автор | G Mountjoy |
| Автор | M A Holland |
| Автор | G W Wallidge |
| Автор | R J Newport |
| Автор | M E Smith |
| Дата выпуска | 2000-11-27 |
| dc.description | The calcination of a (TiO<sub>2</sub>)<sub>0.18</sub>(SiO<sub>2</sub>)<sub>0.82</sub> aerogel has been followed using in situ high-temperature Ti K-edge `quick EXAFS' and XANES measurements. The results clearly show that the coordination of Ti in this material changes from a mixture of four- and sixfold to predominantly fourfold as the temperature is increased from ambient to 300 °C. The decrease in static disorder, as the environment of Ti converts to predominantly a single site, is such that the overall Debye-Waller factor for the Ti-O shell decreases markedly even as the temperature increases to 700 °C. Combined `quick EXAFS' and XANES measurements are shown to be valuable tools for in situ studies of structural changes associated with thermal treatment of amorphous materials. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | In situ EXAFS and XANES measurements of the change in Ti coordination during the calcination of a (TiO<sub>2</sub>)<sub>0.18</sub>(SiO<sub>2</sub>)<sub>0.82</sub> aerogel |
| Тип | paper |
| DOI | 10.1088/0953-8984/12/47/303 |
| Electronic ISSN | 1361-648X |
| Print ISSN | 0953-8984 |
| Журнал | Journal of Physics: Condensed Matter |
| Том | 12 |
| Первая страница | 9751 |
| Последняя страница | 9760 |
| Выпуск | 47 |
