Paper Title:
Oxygen Isotope Exchange between Gaseous Phase Enriched with 18O Isotope and Nanocrystal Oxides LaMnO3+δ Obtained by Severe Plastic Deformation
  Abstract

The kinetics of the isotope exchange between gaseous oxygen enriched with the 18O isotope and two LaMnO3+δ oxide samples – a nanopowder and a bulk nanocrystal – has been studied. The 18O isotope concentration has been measured by the acceleration nuclear microanalysis method. The coefficients of the volume and the nanograin boundary self-diffusion of oxygen have been evaluated at 500 °C. They are equal to 3.5·10 −20 and 1.5·10 −13 cm2/s, respectively.

  Info
Periodical
Defect and Diffusion Forum (Volumes 273-276)
Edited by
Andreas Öchsner and Graeme E. Murch
Pages
233-238
DOI
10.4028/www.scientific.net/DDF.273-276.233
Citation
B. A. Gizhevskii, A. Y. Fishman, E.A. Kozlov, T. E. Kurennykh, S.A. Petrova, I.S. Trakhtenberg, V. B. Vykhodets, V.B. Vykhodets, R. G. Zakharov, "Oxygen Isotope Exchange between Gaseous Phase Enriched with 18O Isotope and Nanocrystal Oxides LaMnO3+δ Obtained by Severe Plastic Deformation", Defect and Diffusion Forum, Vols. 273-276, pp. 233-238, 2008
Online since
February 2008
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