Title of article
Transport properties and defect analysis of La1.9Sr0.1NiO4 + δ
Author/Authors
Li، نويسنده , , Zuoan and Haugsrud، نويسنده , , Reidar and Smith، نويسنده , , Jens B. and Norby، نويسنده , , Truls، نويسنده ,
Issue Information
هفته نامه با شماره پیاپی سال 2009
Pages
9
From page
1433
To page
1441
Abstract
The oxygen flux through La1.9Sr0.1NiO4 + δ has been measured as a function of oxygen activity gradient and temperature (750–1000 °C). The oxygen nonstoichiometry was determined by thermogravimetry in the temperature range of 400–1000 °C and oxygen partial pressures of 0.0002–1 atm. The total conductivity was measured over a similar range of conditions. The oxide ion partial conductivity derived from the oxygen flux data is approximately 4 orders of magnitude lower than the total, mainly p-type electronic conductivity. The defect structure was derived based on the data. Combining the oxygen flux and oxygen nonstoichiometry, the self diffusion coefficient of oxygen interstitials was evaluated.
Keywords
+ , ? , oxygen diffusion , oxygen nonstoichiometry , defect chemistry , La2NiO4 , + , ? , La1.9Sr0.1NiO4
Journal title
Solid State Ionics
Serial Year
2009
Journal title
Solid State Ionics
Record number
1721539
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