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High-temperature coulometric titration of La1-xSrxCoO3-δ : Evidence for the effect of electronic band structure on nonstoichiometry behavior
The equilibrium oxygen chemical potential and the partial energy and entropy of O2in perovskites La1−xSrxCoO3−δwere measured as a function ofδandxby high-temperature oxygen coulometric titration. AnExpand
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Oxygen Exchange and Diffusion Coefficients of Strontium‐Doped Lanthanum Ferrites by Electrical Conductivity Relaxation
Electrical conductivity relaxation experiments were performed on thin specimens of La1–xSrxFeO3–delta (x = 0.1, 0.4) at oxygen partial pressures pO2 = 10–5 – 1 bar in the temperature range 923 toExpand
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Prospects of doped Sb-Te phase-change materials for high-speed recording
Materials optimization is a very important aspect in high-speed optical recording. It is observed that for doped Sb-Te phase-change materials, a high crystallization rate at elevated temperatures isExpand
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Thermodynamic Quantities and Defect Structure of La0.6Sr0.4Co1−yFeyO3−δ(y=0–0.6) from High-Temperature Coulometric Titration Experiments
The partial energies and entropies of O2in perovskite-type oxides La0.6Sr0.4Co1−yFeyO3−δ(y=0, 0.1, 0.25, 0.4, 0.6) were determined as a function of nonstoichiometryδby coulometric titration of oxygenExpand
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Determination of Oxygen Nonstoichiometry and Diffusivity in Mixed Conducting Oxides by Oxygen Coulometric Titration. II Oxygen Nonstoichiometry and Defect Model for La0.8Sr0.2CoO3-delta
The oxygen nonstoichiometry of La0.8Sr0.2CoO3-delta has been determined as a function of oxygen partial pressure and temperature using a high-temperature coulometric titration cell. For each measuredExpand
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Chemical diffusion and oxygen exchange of La0.6Sr0.4Co0.6Fe0.4O3−δ
The transport parameters of La0.6Sr0.4Co0.6Fe0.4O3−δ were determined by electrical conductivity relaxation and high temperature coulometric titration experiments. The experimental response curvesExpand
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Importance of electronic band structure to nonstoichiometric behaviour of La0.8Sr0.2CoO3 − δ
The partial energy and entropy involved in the process of oxygen incorporation into the mixed oxygen ion and electronic conducting La0.8Sr0.2CoO3 was measured by oxygen coulometric titration. TheExpand
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Determination of oxygen nonstoichiometry and diffusivity in mixed conducting oxides by oxygen coulometric titration. 1: Chemical diffusion in La{sub 0.8}Sr{sub 0.2}CoO{sub 3-δ}
Oxygen coulometric titration has been applied to measure chemical diffusion in La0.8Sr0.2CoO3-δ between 700 and 1000°C. The transient current response to a potentiostatic step has been transformedExpand
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Oxygen non-stoichiometry and oxygen diffusivity of mixed conducting perovskites
An oxygen coulometric titration cell has been designed to measure non-stoichiometry and oxygen diffusivity of mixed oxygen ion and electronic conducting, La0.8Sr0.2CoO3-δ. Chemical diffusion data,Expand