0000000001300642

AUTHOR

A. Mishnev

showing 8 related works from this author

Up-conversion processes in NaLaF4:Er3+

2009

abstract Structural and spectroscopic investigation of NaLaF 4 :Er 3+ material at different doping concentrations ispresented. X-ray diffraction patterns, up-conversion luminescence spectra and decay curves for 2 H 9/2 ? 4 I 15/2 , 4 S 3/2 ? 4 I 15/2 and 4 F 9/2 ? 4 I 15/2 optical transitions in the material are shown and possibleexcitation routes are discussed. Raman spectrum for the undoped material is presented and the effectivephonon energy of the material is estimated. Based on the obtained results application of rare-earth dopedNaLaF 4 in the field of up-conversion phosphors is evaluated. 2009 Elsevier B.V. All rights reserved. 1. IntroductionFor many years rare-earth (RE) doped materi…

ChemistryOrganic ChemistryDopingAnalytical chemistryNonlinear opticsPhosphorAtomic and Molecular Physics and OpticsPhoton upconversionElectronic Optical and Magnetic MaterialsIonInorganic Chemistrysymbols.namesakesymbolsElectrical and Electronic EngineeringPhysical and Theoretical ChemistryAtomic physicsTime-resolved spectroscopyLuminescenceRaman spectroscopySpectroscopyOptical Materials
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Luminescence of Ce‐doped borate‐oxyfluoride glass ceramics

2007

In the present work we studied the possibility to obtain oxyfluoride glass ceramics based on a lithium and potassium borate glasses with addition of fluorides. Lithium-borate glasses without lanthanum fluoride are transparent up to 275 nm. In samples with LaF3 doped with Ce-activator, an additional absorption at about 300 nm and intense photoluminescence could be observed. Ce-doped potassium-borate glass with addition of fluorides LaF3, LiF and GdF3 was milky and not transparent, an intense photoluminescence has been observed, X-ray diffraction measurements showed a presence of well-pronounced crystalline phases of LiF as well as of GdBO3. (© 2007 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)

Materials sciencePhotoluminescenceDopingAnalytical chemistryMineralogychemistry.chemical_elementGDF3Condensed Matter Physicschemistryvisual_artvisual_art.visual_art_mediumLithiumCeramicAbsorption (chemistry)LuminescenceBoronphysica status solidi c
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Nitrogen Adsorption on Graphene Sponges Synthesized by Annealing a Mixture of Nickel and Carbon Powders

2017

The present research has been supported by the National Research Programme for 2014–2017 “Multifunctional Materials and Composites, Photonics and Nanotechnologies”.

bet approximationAnnealing (metallurgy)QC1-999nitrogen adsorptionBET approximationGeneral Physics and Astronomychemistry.chemical_elementspecific surface area02 engineering and technologyNitrogen adsorption010402 general chemistry01 natural sciences7. Clean energylaw.inventionlawSpecific surface area:NATURAL SCIENCES:Physics [Research Subject Categories]graphene spongebusiness.industryGraphenePhysicsGeneral Engineering021001 nanoscience & nanotechnology0104 chemical sciencesNickelchemistryChemical engineeringPhotonics0210 nano-technologybusinessLatvian Journal of Physics and Technical Sciences
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CCDC 981716: Experimental Crystal Structure Determination

2014

Related Article: A. Zvirgzdins, A. Mishnev, A. Actins|2014|Acta Crystallogr.,Sect.B:Struct.Sci.,Cryst.Eng. and Mat.|70|342|doi:10.1107/S2052520614001140

Space GroupCrystallographyCrystal SystemCrystal StructureCell Parameters2-((26-Dimethylphenyl)amino)-56-dihydro-4H-13-thiazin-3-ium chlorideExperimental 3D Coordinates
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CCDC 981714: Experimental Crystal Structure Determination

2014

Related Article: A. Zvirgzdins, A. Mishnev, A. Actins|2014|Acta Crystallogr.,Sect.B:Struct.Sci.,Cryst.Eng. and Mat.|70|342|doi:10.1107/S2052520614001140

Space GroupCrystallographyCrystal SystemCrystal StructureCell Parameters2-((26-Dimethylphenyl)amino)-56-dihydro-4H-13-thiazin-3-ium chlorideExperimental 3D Coordinates
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CCDC 966608: Experimental Crystal Structure Determination

2013

Related Article: A. Zvirgzdins, M. Delina, A. Mishnev, A. Actins|2013|Acta Crystallogr.,Sect.E:Struct.Rep.Online|69|o1677|doi:10.1107/S1600536813028353

Space GroupCrystallographyCrystal SystemCrystal StructureCell Parameters6-(2-(4-Methoxyphenyl)-1H-benzimidazol-6-yl)-5-methyl-45-dihydropyridazin-3(2H)-oneExperimental 3D Coordinates
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CCDC 981715: Experimental Crystal Structure Determination

2014

Related Article: A. Zvirgzdins, A. Mishnev, A. Actins|2014|Acta Crystallogr.,Sect.B:Struct.Sci.,Cryst.Eng. and Mat.|70|342|doi:10.1107/S2052520614001140

Space GroupCrystallographyCrystal SystemCrystal StructureCell Parameters2-((26-Dimethylphenyl)amino)-56-dihydro-4H-13-thiazin-3-ium chlorideExperimental 3D Coordinates
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CCDC 909915: Experimental Crystal Structure Determination

2012

Related Article: A.Mishnev, A.Zvirgzdins, A.Actins, M.Delina|2012|Acta Crystallogr.,Sect.E:Struct.Rep.Online|68|o3136|doi:10.1107/S1600536812042432

Space GroupCrystallographyN-(6-Carboxyhexyl)-3-chloro-6-methyl-611-dihydrodibenzo[cf][12]thiazepin-11-aminium 55-dioxide chlorideCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates
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