Search results for "First principles calculations"

showing 6 items of 6 documents

First principles simulations on migration paths of oxygen interstitials in magnesium aluminate spinel

2018

This study has been carried out within the framework of the EURO fusion Consortium and has been provided funding from the Euratom research and training program 2014–2018 under grant agreement No. 633053. The authors are indebted to A.I. Popov, A.C. Lushchik and R. Vila for stimulating discussions. Technical assistance from O. Lisovski is appreciated too. The views and opinions expressed herein do not necessarily reflect those of the European Commission. Calculations have been performed using Marconi supercomputer system based in Italy at CINECA Supercomputing Centre.

010302 applied physicsMaterials sciencePhysicsdiffusionThermodynamicschemistry.chemical_element02 engineering and technology021001 nanoscience & nanotechnologyCondensed Matter PhysicsRadiation defects01 natural sciencesOxygenElectronic Optical and Magnetic MaterialsOxygeninterstitial oxygenchemistry0103 physical sciences:NATURAL SCIENCES:Physics [Research Subject Categories]Magnesium-aluminium spinelDiffusion (business)0210 nano-technologyfirst principles calculationsphysica status solidi (b)
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Origin of pressure-induced insulator-to-metal transition in the van der Waals compound FePS3 from first-principles calculations

2020

The authors acknowledge the assistance of the University Computer Center of Saint‐Petersburg State University in the accomplishment of high‐performance computations. A.K. is grateful to the Latvian Council of Science project no. lzp‐2018/2‐0353 for financial support.

Materials scienceBand gapCell volumelayered compoundFOS: Physical sciencesElectronic structure010402 general chemistry01 natural sciencesMolecular physicsThiophosphateMetalsymbols.namesakechemistry.chemical_compound0103 physical sciences:NATURAL SCIENCES:Physics [Research Subject Categories]Physics::Atomic and Molecular Clustersfirst principles calculationsFePS3insulator-to-metal transitionCondensed Matter - Materials Science010304 chemical physicsMaterials Science (cond-mat.mtrl-sci)General Chemistry0104 chemical scienceshigh pressureComputational MathematicschemistryLinear combination of atomic orbitalsvisual_artsymbolsvisual_art.visual_art_mediumDensity of statesvan der Waals force
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First principles calculations of oxygen reduction reaction at fuel cell cathodes

2020

This study was partly supported by M-ERA-NET project SunToChem (EK, YM). The computer resources were provided by Stuttgart Super-computing Center (Project DEFTD 12939). Authors thank E. Heifets, M. M. Kuklja, M. Arrigoni, D. Morgan, R. Evarestov, and D. Gryaznov for fruitful discussions.

Materials scienceCathode materialsKineticsAb initioOxideAnalytical chemistry02 engineering and technology010402 general chemistry01 natural sciencesAnalytical Chemistrylaw.inventionOxygen reduction Reaction (ORR)chemistry.chemical_compoundSurface arealawVacancy defectElectrochemistry:NATURAL SCIENCES:Physics [Research Subject Categories]PerovskitesFuel cellsPerovskite (structure)Rate determining step021001 nanoscience & nanotechnologyRate-determining stepCathode0104 chemical sciencesPolar surfaceschemistry0210 nano-technologyFirst principles calculations
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Oxygen evolution reaction on a N-doped Co0.5-terminated Co3O4 (001) surface

2020

The project AP05131211 “First principles investigation on catalytic properties of N-doped Co3O4.” was funded by the Ministry of Education and Science of the Republic of Kazakhstan. The work was partly supported by COST (European Cooperation in science and Technology) Action 18234 (YM and EK). The work of T. Inerbaev was performed under the state assignment of Sobolev Institute of Geology and Mineralogy Siberian Branch of the Russian Academy of Sciences. YM and EK thank Sun-to-Chem project of ERA Net.

MultidisciplinaryGeneral interestSciencecobalt oxideQLibrary science02 engineering and technology010402 general chemistry021001 nanoscience & nanotechnology7. Clean energy01 natural sciences0104 chemical sciencesoer:NATURAL SCIENCES:Physics [Research Subject Categories]OERelectrocatalystChristian ministryCobalt oxide0210 nano-technologyGeologyfirst principles calculationsProceedings of the Latvian Academy of Sciences. Section B: Natural, Exact and Applied Sciences
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Use of site symmetry in supercell models of defective crystals: Polarons in CeO2

2017

The authors thank R. Merkle and G. W. Watson for stimulating discussions. E. K. also acknowledges partial financial support from the Russian Science Foundation for the study of charged defects under the project 14-43-00052. A. C. also acknowledges financial support from the University of Latvia Foundation (Arnis Riekstins's "MikroTik" donation). E. K. and D. G. express their gratitude to the High Performance Computer Centre in Stuttgart (HLRS, project DEFTD 12939) for the provided computer facilities whereas R. A. E. thanks the St. Petersburg State University Computer Center for assistance in high-performance calculations.

PhysicspolaronCondensed matter physicssite symmetryGeneral Physics and Astronomy02 engineering and technologyoxygen vacancy021001 nanoscience & nanotechnologyPolaron01 natural sciencesCrystallographic defectSymmetry (physics)Condensed Matter::Materials SciencePerfect crystalLinear combination of atomic orbitalsPosition (vector)Vacancy defect0103 physical sciences:NATURAL SCIENCES:Physics [Research Subject Categories]Wyckoff positionsPhysical and Theoretical Chemistry010306 general physics0210 nano-technologyfirst principles calculationsCeO2
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Site symmetry approach applied to the supercell model of MgAl2O4 spinel with oxygen interstitials: Ab initio calculations

2018

This study has been carried out within the framework of the EUROfusion Consortium and has been provided funding from the Euratom research and training programme 2014-2018 under grant agreement No 633053. The authors are indebted to E.A. Kotomin, A.I. Popov and R. Vila for stimulating discussions. The views and opinions expressed herein do not necessarily reflect those of the European Commission. Calculations have been performed using both the Marconi supercomputer system at the Computational Simulation Centre (Italy) and the Computer Center of St. Petersburg State University.

Single neutral oxygen interstitialMaterials scienceGeneral Computer ScienceBand gapSite symmetryGeneral Physics and Astronomy02 engineering and technologyengineering.material010402 general chemistry01 natural sciencesMolecular physicsPhysics::GeophysicsCrystalCondensed Matter::Materials ScienceLattice constantPerfect crystalAb initio quantum chemistry methods:NATURAL SCIENCES:Physics [Research Subject Categories]General Materials ScienceBulk modulusSpinelMgAl2O4 spinelGeneral Chemistry021001 nanoscience & nanotechnology0104 chemical sciencesComputational MathematicsMechanics of MaterialsengineeringWyckoff positions0210 nano-technologyFirst principles calculations
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