Автор |
G. Baldacchini |
Автор |
E. Giovenale |
Автор |
F. de Matteis |
Автор |
A. Scacco |
Автор |
F. Somma |
Автор |
M. Casalboni |
Автор |
U. M. Grassano |
Дата выпуска |
1988-12-01 |
dc.description |
Type-I or type-II behaviour of the F<sub>A</sub> centres in alkali halides has always been thought of as a feature dependent on the crystal lattice parameter and on the impurity size. We have found experimental evidence suggesting for the first time that both behaviours are present in RbCl:Li<sup>+</sup>, where the F<sub>A</sub> centre at low temperature (T < 15 K) exhibits a luminescence of type-I switching to type-II at higher temperature. This effect is probably related to the possibility for the Li<sup>+</sup> ion of being, at high temperature, a mobile and off-centre ion. Both these conditions seem to be necessary for having a type-II behaviour. |
Формат |
application.pdf |
Издатель |
Institute of Physics Publishing |
Название |
New Luminescence of the F<sub>A</sub> Centre in RbCl:Li<sup>+</sup> |
Тип |
lett |
DOI |
10.1209/0295-5075/7/7/013 |
Electronic ISSN |
1286-4854 |
Print ISSN |
0295-5075 |
Журнал |
EPL (Europhysics Letters) |
Том |
7 |
Первая страница |
647 |
Последняя страница |
650 |
Выпуск |
7 |