Результаты исследований: Вклад в журнал › Статья › Рецензирование
Результаты исследований: Вклад в журнал › Статья › Рецензирование
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TY - JOUR
T1 - Phase equilibria, charge transport, and mass transport in Sr4Nb2O9-“M4Nb2O9” (M = Cd, Cu, Ni, and Zn) systems
AU - Pantyukhina, M. I.
AU - Podkorytov, A. L.
AU - Zhukovskii, V. M.
PY - 2010
Y1 - 2010
N2 - Homogeneous fields of Sr4 - x M x Nb 2O9 (M = Cd, Cu, Ni, or Zn) solid solutions were determined using powder X-ray diffraction. Phase fields were plotted proceeding from the tolerance factor t and electronegativity ratio κ̄ A/κ̄B with a satisfactory fit of experimental results. Thermogravimetry was used to establish the major kinetic laws of solid-phase synthesis (conversion, rate-controlling stage, and effective activation energy) in (4 - x)SrCO3 + xMO + Nb2O 5 powdery mixtures. Direct radiometry was used to determine 90Sr, 63Ni, and 65Zn self-diffusion coefficients in solid solutions based on the Sr4Nb2O 9 phase. Electrical conductivity was measured as a function of temperature for all Sr4Nb2O9-"M 4Nb2O9" samples. The conductivity of Sr4 - x M x Nb2O9 (M = Cd, Cu, Ni, or Zn) solid solutions has a mixed ion-electron character. © 2010 Pleiades Publishing, Ltd.
AB - Homogeneous fields of Sr4 - x M x Nb 2O9 (M = Cd, Cu, Ni, or Zn) solid solutions were determined using powder X-ray diffraction. Phase fields were plotted proceeding from the tolerance factor t and electronegativity ratio κ̄ A/κ̄B with a satisfactory fit of experimental results. Thermogravimetry was used to establish the major kinetic laws of solid-phase synthesis (conversion, rate-controlling stage, and effective activation energy) in (4 - x)SrCO3 + xMO + Nb2O 5 powdery mixtures. Direct radiometry was used to determine 90Sr, 63Ni, and 65Zn self-diffusion coefficients in solid solutions based on the Sr4Nb2O 9 phase. Electrical conductivity was measured as a function of temperature for all Sr4Nb2O9-"M 4Nb2O9" samples. The conductivity of Sr4 - x M x Nb2O9 (M = Cd, Cu, Ni, or Zn) solid solutions has a mixed ion-electron character. © 2010 Pleiades Publishing, Ltd.
UR - https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=tsmetrics&SrcApp=tsm_test&DestApp=WOS_CPL&DestLinkType=FullRecord&KeyUT=000273812700020
UR - http://www.scopus.com/inward/record.url?partnerID=8YFLogxK&scp=75149134255
U2 - 10.1134/S0036023610010201
DO - 10.1134/S0036023610010201
M3 - Article
VL - 55
SP - 103
EP - 111
JO - Russian Journal of Inorganic Chemistry
JF - Russian Journal of Inorganic Chemistry
SN - 0036-0236
IS - 1
ER -
ID: 37889150