FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W1967446137> ?p ?o ?g. }

• W1967446137 abstract "Although the role of oxygen defects in the magnetism of metal oxide semiconductors has been widely discussed, it is been difficult to directly measure the oxygen defect concentration of samples to verify this. This work demonstrates a direct correlation between the photocatalytic activity of Sn1−xFexO2 nanoparticles and their magnetic properties. For this, a series of ∼2.6 nm sized, well characterized, single-phase Sn1−xFexO2 crystallites with x = 0−0.20 were synthesized using tin acetate, urea, and appropriate amounts of iron acetate. X-ray photoelectron spectroscopy confirmed the concentration and 3+ oxidation state of the doped Fe ions. The maximum magnetic moment/Fe ion, μ, of 1.6 × 10−4 μB observed for the 0.1% Fe doped sample is smaller than the expected spin-only contribution from either high or low spin Fe3+ ions, and μ decreases with increasing Fe concentration. This behavior cannot be explained by the existing models of magnetic exchange. Photocatalytic studies of pure and Fe-doped SnO2 were used to understand the roles of doped Fe3+ ions and of the oxygen vacancies and defects. The photocatalytic rate constant k also showed an increase when SnO2 nanoparticles were doped with low concentrations of Fe3+, reaching a maximum at 0.1% Fe, followed by a rapid decrease of k for further increase in Fe%. Fe doping presumably increases the concentration of oxygen vacancies, and both Fe3+ ions and oxygen vacancies act as electron acceptors to reduce e−-h+ recombination and promote transfer of electrons (and/or holes) to the nanoparticle surface, where they participate in redox reactions. This electron transfer from the Fe3+ ions to local defect density of states at the nanoparticle surface could develop a magnetic moment at the surface states and leads to spontaneous ferromagnetic ordering of the surface shell under favorable conditions. However, at higher doping levels, the same Fe3+ ions might act as recombination centers causing a decrease of both k and magnetic moment μ." @default.
• W1967446137 created "2016-06-24" @default.
• W1967446137 creator A5002432799 @default.
• W1967446137 creator A5014075044 @default.
• W1967446137 creator A5036695612 @default.
• W1967446137 creator A5037327959 @default.
• W1967446137 creator A5057581931 @default.
• W1967446137 creator A5058478694 @default.
• W1967446137 date "2013-03-12" @default.
• W1967446137 modified "2023-10-16" @default.
• W1967446137 title "Role of oxygen defects on the magnetic properties of ultra-small Sn_1−xFe_xO₂ nanoparticles" @default.
• W1967446137 cites W1512391708 @default.
• W1967446137 cites W1991299930 @default.
• W1967446137 cites W2008494215 @default.
• W1967446137 cites W2012756040 @default.
• W1967446137 cites W2016634462 @default.
• W1967446137 cites W2032843489 @default.
• W1967446137 cites W2047328127 @default.
• W1967446137 cites W2056088129 @default.
• W1967446137 cites W2056358079 @default.
• W1967446137 cites W2060483215 @default.
• W1967446137 cites W2070949091 @default.
• W1967446137 cites W2095164019 @default.
• W1967446137 cites W2138170034 @default.
• W1967446137 doi "https://doi.org/10.1063/1.4794140" @default.
• W1967446137 hasPublicationYear "2013" @default.
• W1967446137 type Work @default.
• W1967446137 sameAs 1967446137 @default.
• W1967446137 citedByCount "25" @default.
• W1967446137 countsByYear W19674461372014 @default.
• W1967446137 countsByYear W19674461372015 @default.
• W1967446137 countsByYear W19674461372016 @default.
• W1967446137 countsByYear W19674461372017 @default.
• W1967446137 countsByYear W19674461372018 @default.
• W1967446137 countsByYear W19674461372019 @default.
• W1967446137 countsByYear W19674461372021 @default.
• W1967446137 countsByYear W19674461372022 @default.
• W1967446137 countsByYear W19674461372023 @default.
• W1967446137 crossrefType "journal-article" @default.
• W1967446137 hasAuthorship W1967446137A5002432799 @default.
• W1967446137 hasAuthorship W1967446137A5014075044 @default.
• W1967446137 hasAuthorship W1967446137A5036695612 @default.
• W1967446137 hasAuthorship W1967446137A5037327959 @default.
• W1967446137 hasAuthorship W1967446137A5057581931 @default.
• W1967446137 hasAuthorship W1967446137A5058478694 @default.
• W1967446137 hasBestOaLocation W19674461372 @default.
• W1967446137 hasConcept C113196181 @default.
• W1967446137 hasConcept C121332964 @default.
• W1967446137 hasConcept C125938697 @default.
• W1967446137 hasConcept C137637335 @default.
• W1967446137 hasConcept C145148216 @default.
• W1967446137 hasConcept C155672457 @default.
• W1967446137 hasConcept C161790260 @default.
• W1967446137 hasConcept C171250308 @default.
• W1967446137 hasConcept C175708663 @default.
• W1967446137 hasConcept C178790620 @default.
• W1967446137 hasConcept C179104552 @default.
• W1967446137 hasConcept C185592680 @default.
• W1967446137 hasConcept C191897082 @default.
• W1967446137 hasConcept C192562407 @default.
• W1967446137 hasConcept C197162081 @default.
• W1967446137 hasConcept C26873012 @default.
• W1967446137 hasConcept C43617362 @default.
• W1967446137 hasConcept C46141821 @default.
• W1967446137 hasConcept C49040817 @default.
• W1967446137 hasConcept C525849907 @default.
• W1967446137 hasConcept C540031477 @default.
• W1967446137 hasConcept C54553102 @default.
• W1967446137 hasConcept C55493867 @default.
• W1967446137 hasConcept C57863236 @default.
• W1967446137 hasConcept C65165184 @default.
• W1967446137 hasConceptScore W1967446137C113196181 @default.
• W1967446137 hasConceptScore W1967446137C121332964 @default.
• W1967446137 hasConceptScore W1967446137C125938697 @default.
• W1967446137 hasConceptScore W1967446137C137637335 @default.
• W1967446137 hasConceptScore W1967446137C145148216 @default.
• W1967446137 hasConceptScore W1967446137C155672457 @default.
• W1967446137 hasConceptScore W1967446137C161790260 @default.
• W1967446137 hasConceptScore W1967446137C171250308 @default.
• W1967446137 hasConceptScore W1967446137C175708663 @default.
• W1967446137 hasConceptScore W1967446137C178790620 @default.
• W1967446137 hasConceptScore W1967446137C179104552 @default.
• W1967446137 hasConceptScore W1967446137C185592680 @default.
• W1967446137 hasConceptScore W1967446137C191897082 @default.
• W1967446137 hasConceptScore W1967446137C192562407 @default.
• W1967446137 hasConceptScore W1967446137C197162081 @default.
• W1967446137 hasConceptScore W1967446137C26873012 @default.
• W1967446137 hasConceptScore W1967446137C43617362 @default.
• W1967446137 hasConceptScore W1967446137C46141821 @default.
• W1967446137 hasConceptScore W1967446137C49040817 @default.
• W1967446137 hasConceptScore W1967446137C525849907 @default.
• W1967446137 hasConceptScore W1967446137C540031477 @default.
• W1967446137 hasConceptScore W1967446137C54553102 @default.
• W1967446137 hasConceptScore W1967446137C55493867 @default.
• W1967446137 hasConceptScore W1967446137C57863236 @default.
• W1967446137 hasConceptScore W1967446137C65165184 @default.
• W1967446137 hasIssue "17" @default.
• W1967446137 hasLocation W19674461371 @default.
• W1967446137 hasLocation W19674461372 @default.
• W1967446137 hasOpenAccess W1967446137 @default.

• next