| Автор | F K Koschnick |
| Автор | J -M Spaeth |
| Автор | R S Eachus |
| Дата выпуска | 1992-03-16 |
| dc.description | Using magneto-optical and optically detected electron paramagnetic resonance methods, it is shown that in BaFBr single crystals grown using standard procedures the ubiquitous oxide impurity is primarily responsible for the X-irradiation-induced formation of F(Br<sup>-</sup>) centres. The bromide vacancy formed to charge compensate O<sup>2-</sup> is implicated in the direct trapping of electrons. F(F<sup>-</sup>) centres are also produced by irradiation, probably by an exciton collapse process requiring thermal activation. Cross relaxation measurements show that many of the F(F<sup>-</sup>) and F(Br<sup>-</sup>) centres are spatially correlated, more than expected on statistical grounds. The relevance of these results to the use of rare earth-activated BaFBr materials as storage phosphors is discussed. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | The influence of oxide impurity on the generation by X-irradiation of F centres in BaFBr |
| Тип | paper |
| DOI | 10.1088/0953-8984/4/11/025 |
| Electronic ISSN | 1361-648X |
| Print ISSN | 0953-8984 |
| Журнал | Journal of Physics: Condensed Matter |
| Том | 4 |
| Первая страница | 3015 |
| Последняя страница | 3029 |
| Аффилиация | F K Koschnick; Paderborn Univ., Germany |
| Аффилиация | J -M Spaeth; Paderborn Univ., Germany |
| Аффилиация | R S Eachus; Paderborn Univ., Germany |
| Выпуск | 11 |
