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Article
Evaluation of electrode-oriented properties of BaFe1−xCexO3−δ
The structure, oxygen non-stoichiometry, thermomechanical and electrical properties of perovskite-type BaFe1−xCexO3−δ (x = 0.05, 0.10, 0.15) were studied in the light of the potential use of these oxides as elect...
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Article
High-temperature mixed conductivity in PrBaFe2O6−δ
High-temperature transport properties of the PrBaFe2O6−δ ceramics, prepared by different routes, were studied in the light of their potential use in energy conversion technologies. The PrBaFe2O6−δ oxides fabricat...
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Article
Sodium Ion Transport and Phase Transition in the Vanadate Na3ErV2O8 with Glaserite Type Structure
The vanadate Na3ErV2O8 with a glaserite type structure was obtained by solid-phase synthesis in air. The unit cell parameters (space group P21/n) calculated from powder X-ray diffraction data at room temperature ...
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Article
Ionic transport in (La,Sr)CoO3-δ ceramics
Increasing Sr2+ concentration and the creation of A-site deficiency in La1-x-ySrxCoO3-δ (x = 0.3–0.7, y = 0–0.05) increase oxygen ionic conductivity, oxygen permeability of the dense ceramic membranes, and surfac...
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Article
High-temperature transport in perovskite-type Ca0.25Sr0.75Fe0.75Mo0.25O3 − δ
The comparative study of transport characteristics of SrFe0.75Mo0.25O3 − δ and Ca0.25Sr0.75Fe0.75Mo0.25O3 − δ was carried out in order to evaluate calcium substitution usability to improve functional properties o...
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Article
Electrical Transport Properties of Ca1 –xBixMnO3 – δ
The electrical conductivity (σ) and thermoelectric power (S) of Ca1 –xBixMnO3 – δ (х = 0.05, 0.10, 0.15) manganites with a perovskite-like structure have been measured in air in the temperature range 298–1223 K. ...
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Article
Equilibrium of Defects and Electrical Conductivity of Cation-Deficient Double Cobaltites
The crystal structure, oxygen nonstoichiometry, and electrical conductivity in PrBa1 – xCo2O6 – δ cobaltites with double perovskite structure are studied. It is shown that defective cobaltites within region of ho...
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Article
Oxygen Nonstoichiometry and Transport Properties of Mixed-Conducting Ce0.6–xLa0.4Pr x O2–δ
The oxygen nonstoichiometry and electrical conductivity of fluorite-type solid solutions Ce0.6‒xLa0.4Pr x O2–δ (x = 0.1–0.2) were studied in the oxygen partial pressure range 10–...
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Article
Transport and Electrochemical Properties of SrFe(Al,Mo)O3–δ
In this work, effects of molybdenum do** on the crystal structure, stability, electrical conductivity, oxygen permeability and thermomechanical properties of Sr(Fe,Al)O3–δ-based perovskites, were studied. The e...
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Article
Fabrication and Testing of a Tubular Thermoelectric Module Based on Oxide Elements
A thermoelectric module with a tubular design, considered as particularly promising for energy recovery from hot exhaust gases of vehicles was fabricated and successfully tested under laboratory condition. The...
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Article
The impact of Ba substitution on high-temperature transport in lanthanum-strontium ferrite
Effect of barium content on structural, thermal, and transport properties of oxides La0.49Sr0.5–x Ba x FeO3–δ (х = 0, 0.25, 0.50) was studied wit...
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Article
Defect formation, ordering, and transport in SrFe1–x Si x O3–δ (x = 0.05–0.20)
Oxygen nonstoichiometry of perovskite-like SrFe1–x Si x O3–δ (x = 0.05–0.20), studied by thermogravimetric analysis and coulometric titration in ...
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Article
Electrical conductivity and carrier mobility in Ca1–x Pr x MnO3–δ manganites
The electrical conductivity (σ) of Ca1–x Pr x MnO3–δ (х = 0–0.15) manganites with a perovskite-like structure has been measured by the four probe ...
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Article
Seebeck coefficient of Ca1–x Pr x MnO3–δ paramagnetic manganites
The Seebeck coefficient (S) of Ca1–x Pr x MnO3–δ (х = 0, 0.05, 0.10, 0.15) manganites with a perovskite-like structure has been measured in air at...
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Article
Thermodynamic properties of nonstoichiometric oxygen in manganite Ca0.9Pr0.1MnO3–δ
The chemical potential of oxygen ΔμO relative to its standard state in the gas phase was calculated from the experimental dependences of the oxygen content in various polymorphic modifications of Ca0.9Pr0.1MnO3–δ
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Article
Oxygen nonstoichiometry and defect equilibrium in Ca1–x Pr x MnO3–δ manganites
The content of oxygen in Ca1−x Pr x MnO3−δ (x = 0.1) material with perovskite-like structure is determined at 750–950°C and oxygen partial pressur...
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Article
Oxygen non-stoichiometry and mixed conductivity of La0.5Sr0.5Fe1–x Mn x O3–δ
Oxygen non-stoichiometry, thermal expansion, and high-temperature transport properties of perovskite-type La0.5Sr0.5Fe1– x Mn x ...
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Article
Ion transport in dual-phase SrFe1−xТаxO3−δ (x = 0.03 − 0.10): effects of redox cycling
The incorporation of tantalum cations in mixed-conducting SrFe1-xTaxO3−δ (x = 0.03 − 0.10) results in the formation of single cubic perovskite-like phases in oxidizing atmospheres while under red...
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Article
Oxygen nonstoichiometry and the thermodynamic properties of manganites Ca1 − x − y Sr x La y MnO3 − δ
The content of oxygen in Ca0.6 − y Sr0.4La y MnO3 − δ, where y = 0 and 0.05, was determined by coulometric titration over the temperature range 650–950°C ...
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Article
Oxygen nonstoichiometry and the thermodynamic and structural properties of double perovskites PrBaCo2 − x Cu x O5 + δ
The special features of the structure, electrophysical properties, and oxygen nonstoichiometry of new double perovskites PrBaCo2 − x Cu x O5 + δ were studied. Wit...
