|
ИСТИНА |
Войти в систему Регистрация |
ФНКЦ РР |
||
Synthesis and luminescence properties of BaHfO3:Pr ceramicsстатья
Статья опубликована в высокорейтинговом журнале
Статья опубликована в журнале из списка Web of Science и/или Scopus- Авторы: Seferis I.E., Fiaczyk K., Spassky D., Felbach E., Romet I., Kirm M., Zych E.
- Журнал: Journal of Luminescence
- Год издания: 2016
- Издательство: Elsevier BV
- Местоположение издательства: Netherlands
- DOI: 10.1016/j.jlumin.2016.09.035
- Аннотация: BaHfO3 sintered ceramic scintillators doped with various Pr concentrations (0 to 1mol%) were synthesized at 1700 ⁰C at N2-H2 atmosphere. XRD, SEM and photo-luminescent techniques in various temperatures (40 K to 550 K) were employed to reveal properties of the BaHfO3:Pr ceramics. Results of spectroscopic investigation indicate that the luminescence is connected almost exclusively with decay of the 3P0 level, while the emission from 1D2 is hardly seen even for higher Pr3+ concentrations. However, the intrinsic emission of BaHfO3 matrix, related with defects or impurities, seems to compete with the emission of Pr3+ ions. The 3P0 luminescence decays give time constant of about 25-32 μs, while the 1D2 decay time depends on the cross relaxation rate of Pr ions.
- Добавил в систему: Спасский Дмитрий Андреевич