Oxygen Isotope Exchange between Gaseous Phase Enriched with 18O Isotope and Nanocrystal Oxides LaMnO3+δ Obtained by Severe Plastic Deformation |
|
| Journal | Defect and Diffusion Forum (Volumes 273 - 276) |
|---|---|
| Volume | Diffusion in Solids and Liquids III |
| 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 et al., 2008, Defect and Diffusion Forum, 273-276, 233 |
| Online since | February, 2008 |
| Authors | B.A. Gizhevskii, A.Ya. Fishman, E.A. Kozlov, T.E. Kurennykh, S.A. Petrova, I.Sh. Trakhtenberg, E.V. Vykhodets, V.B. Vykhodets, R.G. Zakharov |
| Keywords | Diffusion, Isotope, Nanoparticle, Nuclear Microanalysis, Oxide, Oxygen |
| 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. |
| Full Paper | 
Get the full paper by clicking here
|
First page example
