0000000000006825

AUTHOR

I. Makarenko

showing 3 related works from this author

Low-temperature luminescence of CdI2 under synchrotron radiation

2020

Synchrotron radiation is applied to study visible and UV luminescence spectra and their excitation spectra of undoped as well as In and Sb doped cadmium iodide crystals at 10 K. The origin of principal luminescence bands and the role of impurities in the formation of emission centers are discussed. The luminescence properties have been explained based on the electronic structure of CdI2 crystals.

010302 applied physicsMaterials sciencePhysics and Astronomy (miscellaneous)Condensed Matter::OtherExcitation spectraDopingAnalytical chemistryPhysics::OpticsGeneral Physics and AstronomySynchrotron radiationLuminescence spectraElectronic structure01 natural sciences3. Good healthCondensed Matter::Materials Sciencechemistry.chemical_compoundCadmium iodidechemistryImpurityCondensed Matter::Superconductivity0103 physical sciencesCondensed Matter::Strongly Correlated Electrons010306 general physicsLuminescenceLow Temperature Physics
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Thermal annealing of radiation defects in MgF2 single crystals induced by neutrons at low temperatures

2020

Abstract Primary radiation defects in ionic solids consist of Frenkel defects – pairs of defects - anion vacancies with trapped electrons (F-type centers) and interstitial ions. Upon temperature increase after irradiation, the electronic F-type centers are annealed due to recombination with mobile interstitials. Analysis of the recombination (annealing) kinetics allows us to obtain important information on the interstitial migration. At high radiation doses more complex dimer (F2-type) centers are observed in several charge states, which are well distinguished spectroscopically. We analysed here available experimental kinetics of the F2-type center annealing in MgF2 in a wide temperature ra…

Nuclear and High Energy PhysicsMaterials scienceAnnealing (metallurgy)Ionic bonding02 engineering and technologyElectronRadiationAtmospheric temperature range021001 nanoscience & nanotechnology01 natural sciencesMolecular physicsIon0103 physical sciencesIrradiation010306 general physics0210 nano-technologyInstrumentationRecombinationNuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
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Raman spectra of vacancy-containing LiF: Predictions from first principles

2020

Abstract The electronic structure and Raman scattering from face-centered cubic LiF with three types of vacancies — an F-center, an F ′ -center and a vacancy without electrons ( v F ) — has been calculated by means of hybrid exchange–correlation functional within density functional theory. Our modeling predicts the effective charge of 0.87 e , 1.50 e and 0.10 e on the defect, respectively. The F-center induces two in-gap energy levels for two spin states split by 3.4 eV, while the F ′ -center and the v F induce a single in-gap level 3.8 eV and 2.9 eV below the bottom of conduction band, respectively. The calculated Raman spectra are thoroughly discussed and are found to match well the earli…

Nuclear and High Energy PhysicsMaterials scienceSpin states02 engineering and technologyElectronic structureElectron021001 nanoscience & nanotechnology01 natural sciencesEffective nuclear chargesymbols.namesakeVacancy defect0103 physical sciencessymbolsDensity functional theoryAtomic physics010306 general physics0210 nano-technologyRaman spectroscopyInstrumentationRaman scatteringNuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
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