Rational synthesis of F-doped iron oxides on Al2O3(0001) single crystals (Articolo in rivista)

Type
Label
  • Rational synthesis of F-doped iron oxides on Al2O3(0001) single crystals (Articolo in rivista) (literal)
Anno
  • 2014-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1039/c4ra09021g (literal)
Alternative label
  • Carraro G.; Gasparotto A.; Maccato C.; Bontempi E.; Lebedev O.I.; Sada C.; Turner S.; Van Tendeloo G.; Barreca D. (2014)
    Rational synthesis of F-doped iron oxides on Al2O3(0001) single crystals
    in RSC advances
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Carraro G.; Gasparotto A.; Maccato C.; Bontempi E.; Lebedev O.I.; Sada C.; Turner S.; Van Tendeloo G.; Barreca D. (literal)
Pagina inizio
  • 52140 (literal)
Pagina fine
  • 52146 (literal)
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  • Autori stranieri (literal)
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  • http://pubs.rsc.org/en/Content/ArticleLanding/2014/RA/C4RA09021G#!divAbstract (literal)
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  • 4 (literal)
Rivista
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  • 7 (literal)
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  • 94 (literal)
Note
  • ISI Web of Science (WOS) (literal)
  • Scopu (literal)
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  • 1-3 : Department of Chemistry, Padova University, INSTM Padova, Italy / 4 : Chemistry for Technologies Laboratory, University of Brescia Brescia, Italy / 5 : Laboratoire CRISMAT, CNRS-ENSICAEN UMR 6508Caen Cedex 4, France / 6 : Department of Physics and Astronomy, Padova University Padova, Italy / 7,8 : EMAT, Antwerp UniversityAntwerpen, Belgium / 9 : IENI-CNR and INSTM, Department of Chemistry, Padova University Padova, Italy (literal)
Titolo
  • Rational synthesis of F-doped iron oxides on Al2O3(0001) single crystals (literal)
Abstract
  • A plasma enhanced-chemical vapor deposition (PE-CVD) route to Fe2O3-based materials on Al2O3(0001) single crystals at moderate growth temperatures (200-400 ?C) is reported. The use of the fluorinated Fe(hfa)2TMEDA (hfa = 1,1,1,5,5,5-hexafluoro-2,4-pentanedionate; TMEDA = N,N,N',N'-tetramethylethylenediamine) molecular precursor in Ar/O2 plasmas enabled an in situ F-doping of iron oxidematrices, with a fluorine content tuneable as a function of the adopted preparative conditions. Variations of the thermal energy supply enabled control of the system phase composition, resulting in gamma-Fe2O3 at 200 ?C and alpha-Fe2O3 nanostructures at higher deposition temperatures. Notably, at 400 ?C the formation of highly oriented alpha-Fe2O3 nanocolumns characterized by an epitaxial relation with the Al2O3(0001) substrate was observed. Beside fluorine content, phase composition and nano-organization, even the system optical properties and, in particular, energy gap values, could be tailored by proper modifications of processing parameters. (literal)
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