0000000000173584
AUTHOR
Katrīna Laganovska
High resolution luminescence spectroscopy and thermoluminescence of different size LaPO4:Eu3+ nanoparticles
T. G. acknowledges the ERDF PostDoc project No. 1.1.1.2/VIAA/1/16/215 (1.1.1.2/16/I/001). K. S. and K. L. acknowledge the Latvian National Research Program IMIS2. The authors from Vinča Institute of Nuclear Sciences acknowledge the financial support of the Ministry of Education, Science and Technological Development of the Republic of Serbia (Project No: 45020 and 172056 ).
The boron effect on low temperature luminescence of SrAl2O4:Eu, Dy
V.V. acknowledges the financial support of ERDF PostDoc project No. 1.1.1.2/VIAA/3/19/440 (University of Latvia Institute of Solid State Physics, Latvia) and K.S., I.B., A.Z., D.M. and K.L. acknowledge the financial support of ERDF, European-Union Project No. 1.1.1.1/16/A/182 (University of Latvia Institute of Solid State Physics, Latvia).
Formation of translucent nanostructured zirconia ceramics
Abstract In this work the mechanisms that affect the optical transparency of nanostructured translucent ZrO2 ceramics are studied. The translucent ceramic samples were obtained from a low agglomeration nanosized powder at low pressure and low temperature sintering. Even low pressures cause structural changes and defect creation in the nanocrystals. Annealing was used to study the grain formation, structure and impact of defects. Significant changes in translucency were observed with increase in pore size. In order to further understand the defect creation, the obtained ceramics were doped with Er3+ ions and studied optically. Photoluminescence studies revealed a change in the ratio of green…
Jaunatklāto oglekļa zvaigžņu efektīvās temperatūras
Tiek pētītas jaunatklātās oglekļa zvaigznes un noteiktas to efektīvās temperatūras. No atrastajām 77 oglekļa zvaigznēm, izmantojot Šmidta teleskopu un CCD kameru iegūtajos uzņēmumos, 19 ir jaunatklātas. Oglekļa zvaigznēm noteiktas precīzas koordinātas pēc 2MASS katalogu datiem un, balstoties uz iepriekš veiktajiem Latvijas Universitātes Astronomijas institūta pētījumiem, aprēķinātas efektīvās temperatūras.
Niobium enhanced europium ion luminescence in hafnia nanocrystals
This work was supported by the UL ISSP grant for Scientific Research Projects for Students and Young Researchers SJZ/2016/15 .