Site-selective laser spectroscopy of Sm3+ ions in Y4Al2O9
Marcin Piotr Kaczkan , Zuzanna Boruc , Sebastian Turczyński , Dorota Pawlak , Michał Malinowski
AbstractSm3+ doped Y4Al2O9 (YAM) crystals were prepared by the micro-pulling down method. Optical-absorption and laser-selective-excitation techniques along with luminescence decays have been used to reveal that Sm3+ ions in YAM normally occupy four sites, which were characterized and discussed. The comprehensive sets of Stark energy levels of the four Sm3+ centers in YAM were established. The intensity ratio of forced electric dipole (4G5/2 → 6H9/2) and magnetic dipole (4G5/2 → 6H5/2) transitions has been used to estimate the degree of asymmetry of Sm3+ sites. The lifetime of Sm3+ ions and the cross-relaxation rates were experimentally determined as a function of concentration for two distinct crystallographic Sm3+ centers. The dependencies of the nearest surroundings on the relaxation of the 4G5/2 excited state was discussed.
|Journal series||Journal of Luminescence, ISSN 0022-2313|
|Publication size in sheets||0.5|
|Keywords in English||Sm3+ ion; Photoluminescence; Site-selective spectroscopy; cross-relaxation|
|project||High temperature spectroscopy of rare-earth doped crystals and nanocrystals for luminescence thermometry applications. Project leader: Malinowski Michał,
, Phone: (+48) 22 234 7783, application date 27-01-2009, start date 23-09-2009, end date 22-03-2012, IMiO/2009/MNSW/7, Completed
|Score|| = 35.0, 27-03-2017, ArticleFromJournal|
= 35.0, 27-03-2017, ArticleFromJournal
|Publication indicators||: 2016 = 2.686 (2) - 2016=2.558 (5)|
|Citation count*||4 (2018-06-21)|
|Acknowledgement||This work was supported by the MNiSzW N N515081537 and NCN 2012/07/B/ST5/02406 projects.|
* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.