Cusick, Alex B. ; Lang, Maik ; Zhang, Fuxiang ; Zhang, Jiaming ; Kluth, Patrick ; Trautmann, Christina ; Ewing, Rodney C. (2017)
Phase transformation and chemical decomposition of nanocrystalline SnO 2 under heavy ion irradiation.
In: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 407
doi: 10.1016/j.nimb.2017.05.037
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
A crystalline-to-crystalline phase transformation, including chemical decomposition, has been observed in SnO2 nanopowder irradiated by 2.2 GeV 197Au ions. X-ray diffraction (XRD), Raman spectroscopy, and transmission electron microscopy (TEM) were used to characterize the transformation from tetragonal SnO2 (P42/mnm) to tetragonal SnO (P4/nmm), with trace quantities of β-Sn (I41/amd). At a fluence of approximately 2.0 × 1012 ions/cm2, diffraction maxima corresponding to SnO became clearly evident and increased in intensity as fluence increased. The proportion of SnO, as determined by Rietveld refinement of XRD data, reached 23.1 ± 0.8% at the maximum fluence investigated of 2.4 × 1013 ions/cm2. Raman spectra show high photoluminescence (PL) intensity before and during initial SnO formation, indicating the importance of oxygen vacancies in the transformation process. Small-angle X-ray scattering (SAXS) analysis provided evidence of ion tracks, but no tracks were observed using high-resolution TEM (HRTEM). The transformation likely occurs through a multiple-impact mechanism, based on the accumulation of O vacancies, defect ordering, and partially localized Sn reduction.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2017 |
| Autor(en): | Cusick, Alex B. ; Lang, Maik ; Zhang, Fuxiang ; Zhang, Jiaming ; Kluth, Patrick ; Trautmann, Christina ; Ewing, Rodney C. |
| Art des Eintrags: | Bibliographie |
| Titel: | Phase transformation and chemical decomposition of nanocrystalline SnO 2 under heavy ion irradiation |
| Sprache: | Englisch |
| Publikationsjahr: | 15 September 2017 |
| Verlag: | Elsevier Science Publishing |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms |
| Jahrgang/Volume einer Zeitschrift: | 407 |
| DOI: | 10.1016/j.nimb.2017.05.037 |
| URL / URN: | https://doi.org/10.1016/j.nimb.2017.05.037 |
| Kurzbeschreibung (Abstract): | A crystalline-to-crystalline phase transformation, including chemical decomposition, has been observed in SnO2 nanopowder irradiated by 2.2 GeV 197Au ions. X-ray diffraction (XRD), Raman spectroscopy, and transmission electron microscopy (TEM) were used to characterize the transformation from tetragonal SnO2 (P42/mnm) to tetragonal SnO (P4/nmm), with trace quantities of β-Sn (I41/amd). At a fluence of approximately 2.0 × 1012 ions/cm2, diffraction maxima corresponding to SnO became clearly evident and increased in intensity as fluence increased. The proportion of SnO, as determined by Rietveld refinement of XRD data, reached 23.1 ± 0.8% at the maximum fluence investigated of 2.4 × 1013 ions/cm2. Raman spectra show high photoluminescence (PL) intensity before and during initial SnO formation, indicating the importance of oxygen vacancies in the transformation process. Small-angle X-ray scattering (SAXS) analysis provided evidence of ion tracks, but no tracks were observed using high-resolution TEM (HRTEM). The transformation likely occurs through a multiple-impact mechanism, based on the accumulation of O vacancies, defect ordering, and partially localized Sn reduction. |
| Freie Schlagworte: | Swift heavy Ions, Irradiation, Phase Transformation, Tin oxide, Nanocrystalline, Decomposition, Reduction |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Ionenstrahlmodifizierte Materialien 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften |
| Hinterlegungsdatum: | 29 Dez 2017 10:07 |
| Letzte Änderung: | 29 Dez 2017 10:07 |
| PPN: | |
| Sponsoren: | This work was supported by the Office of Basic Energy Sciences of the US-DOE under Grant DE-FG02-97ER45656 (RCE, ML, ABC and JZ); US-DOE under Contract DE-AC02-10886 (FZ); NSF COMPRES under Grant EAR01-35554., PK acknowledges the Australian Research Council for financial support., This research used resources of the National Synchrotron Light Source, a U.S. Department of Energy (DOE) Office of Science User Facility operated for the DOE Office of Science by Brookhaven National Laboratory under Contract No. DE-AC02-98CH10886. |
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