0000000001081619

AUTHOR

Katrīna Laganovska

showing 5 related works from this author

High resolution luminescence spectroscopy and thermoluminescence of different size LaPO4:Eu3+ nanoparticles

2018

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 ).

Materials scienceAnalytical chemistry02 engineering and technology010402 general chemistrythermo-stimulated luminescence7. Clean energy01 natural sciencesThermoluminescenceIonInorganic ChemistryIonization:NATURAL SCIENCES:Physics [Research Subject Categories]high resolution spectroscopyEmission spectrumElectrical and Electronic EngineeringPhysical and Theoretical ChemistrySpectroscopySpectroscopyOrganic ChemistryDopingEu3+ [LaPO4]021001 nanoscience & nanotechnologyAtomic and Molecular Physics and Optics0104 chemical sciencesElectronic Optical and Magnetic MaterialsNanorod0210 nano-technologyLuminescenceX-ray excitation
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The boron effect on low temperature luminescence of SrAl2O4:Eu, Dy

2020

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).

Materials sciencePersistent luminescenceAnalytical chemistrychemistry.chemical_element02 engineering and technologyTrapping7. Clean energy01 natural sciencesPersistent luminescence0103 physical sciencesMaterials Chemistry:NATURAL SCIENCES:Physics [Research Subject Categories]BoronQuantum tunnelling010302 applied physicsLong afterglowProcess Chemistry and Technology021001 nanoscience & nanotechnologySurfaces Coatings and FilmsElectronic Optical and Magnetic MaterialsAfterglowBoron concentrationchemistryCeramics and Composites0210 nano-technologyLuminescenceIntensity (heat transfer)
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Formation of translucent nanostructured zirconia ceramics

2021

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…

010302 applied physicsQuenchingMaterials sciencePhotoluminescenceScanning electron microscopeAnnealing (metallurgy)Sintering02 engineering and technology021001 nanoscience & nanotechnology01 natural sciencesChemical engineeringTransmission electron microscopyvisual_art0103 physical sciencesMaterials ChemistryCeramics and Compositesvisual_art.visual_art_mediumCubic zirconiasense organsCeramic0210 nano-technologyJournal of the European Ceramic Society
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Niobium enhanced europium ion luminescence in hafnia nanocrystals

2018

This work was supported by the UL ISSP grant for Scientific Research Projects for Students and Young Researchers SJZ/2016/15 .

Eu3+LuminescenceMaterials scienceAnnealing (metallurgy)BiophysicsAnalytical chemistryNiobiumchemistry.chemical_element02 engineering and technology01 natural sciencesBiochemistryIon0103 physical sciences:NATURAL SCIENCES:Physics [Research Subject Categories]010302 applied physicsDopantbiologyCharge compensationGeneral Chemistry021001 nanoscience & nanotechnologyCondensed Matter PhysicsHafniabiology.organism_classificationAtomic and Molecular Physics and OpticsJudd OfeltNanocrystalchemistryHafniaQuantum efficiency0210 nano-technologyLuminescenceJournal of Luminescence
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Jaunatklāto oglekļa zvaigžņu efektīvās temperatūras

2014

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.

Fizika
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