Результаты исследований: Глава в книге, отчете, сборнике статей › Материалы конференции › Рецензирование
Результаты исследований: Глава в книге, отчете, сборнике статей › Материалы конференции › Рецензирование
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TY - GEN
T1 - Isotope Exchange of Gaseous Oxygen with Oxide LaMno3+δ Nanograins Boundary
T2 - book chapter
AU - Fishman, Anatoly Yakovlevich
AU - Kurennykh, Tatiana Eugenievna
AU - Vykhodets , E. V.
AU - Vykhodets, Vladimir Borisovich
PY - 2010
Y1 - 2010
N2 - Isotope exchange of oxygen 18O2 with the boundary of nanograins of oxide LaMnO3+δ obtained by the method of shock-wave loading was investigated in the temperature range of 400 - 500°C. It was established that the temperature dependence of the isotope exchange rate is described by the Arrhenius expression, the activation energy and the pre-exponential factor being 1.67 eV and 1.8°102 cm/s, respectively. Comparison with literature data has shown that for oxide LaMnO3+δ, a significant difference in activation energies and pre-exponential factors is observed for the isotope exchange rate with a 'defect-free' surface and the nanograin boundary. In case of the boundary, these parameters were higher: the activation energy about two times, and the pre-exponential factor, by almost 7 orders of magnitude. © (2010) Trans Tech Publications.
AB - Isotope exchange of oxygen 18O2 with the boundary of nanograins of oxide LaMnO3+δ obtained by the method of shock-wave loading was investigated in the temperature range of 400 - 500°C. It was established that the temperature dependence of the isotope exchange rate is described by the Arrhenius expression, the activation energy and the pre-exponential factor being 1.67 eV and 1.8°102 cm/s, respectively. Comparison with literature data has shown that for oxide LaMnO3+δ, a significant difference in activation energies and pre-exponential factors is observed for the isotope exchange rate with a 'defect-free' surface and the nanograin boundary. In case of the boundary, these parameters were higher: the activation energy about two times, and the pre-exponential factor, by almost 7 orders of magnitude. © (2010) Trans Tech Publications.
UR - http://www.scopus.com/inward/record.url?partnerID=8YFLogxK&scp=77952244579
U2 - 10.4028/www.scientific.net/DDF.297-301.1301
DO - 10.4028/www.scientific.net/DDF.297-301.1301
M3 - Conference contribution
SN - 3908451809
SN - 978-390845180-8
VL - 297-301
T3 - Defect and Diffusion Forum
SP - 1301
EP - 1305
BT - Defect and Diffusion Forum
ER -
ID: 38010378