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Träfflista för sökning "WFRF:(Kanciurzewska Anna) srt2:(2009)"

Sökning: WFRF:(Kanciurzewska Anna) > (2009)

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1.
  • Bhatt, Pramod, et al. (författare)
  • Ferromagnetism above room temperature in nickel-tetracyanoethylene thin films
  • 2009
  • Ingår i: Journal of Materials Chemistry. - : Royal Society of Chemistry (RSC). - 0959-9428 .- 1364-5501. ; 19:36, s. 6610-6615
  • Tidskriftsartikel (refereegranskat)abstract
    • Room temperature ferromagnetic ordering is reported in Ni-tetracyanoethylene (TCNE) thin films fabricated on Au substrates using physical vapor deposition (PVD) under ultra high vacuum conditions. This technique enables the preparation of very clean films without having any kind of contamination from oxygen-containing species, solvents or precursor molecules. Film stoichiometry was obtained from X-ray photoelectron spectroscopy (XPS) measurements. XPS derived stoichiometry points to a similar to 1 : 2 ratio between Ni and TCNE resulting in Ni(TCNE)(x), x approximate to 2. No evidence of pure Ni metal in the in situ grown films was present in the XPS or the ultraviolet photoelectron spectroscopy (UPS) measurements within the detection limits of the techniques.
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2.
  • Golczak, Sebastian, et al. (författare)
  • Degradation of microporous polyaniline film by UV-ozone treatment
  • 2009
  • Ingår i: POLYMER DEGRADATION AND STABILITY. - : Elsevier BV. - 0141-3910. ; 94:3, s. 350-354
  • Tidskriftsartikel (refereegranskat)abstract
    • Thin microporous polyaniline films in the emeraldine-base form (PANI-EB) have been prepared electrochemically at a potential of 0.8 V. The effect of ozone treatment on the structural changes of polyaniline thin films has been investigated using X-ray photoelectron spectroscopy, SEM and EPR. Surface analysis showed that oxidation occurs mainly at the carbon atoms, resulting in the formation of C=O and COOH species. The degradation reaction seems to be preferentially directed towards the quinoneimine units. At high extent of carbon oxidation, UV-ozone treatment may involve the direct oxidation of the nitrogen atoms to form -NOx species.
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