Please use this identifier to cite or link to this item: http://hdl.handle.net/10995/102214
Title: Synthesis and characterization of the oxygen-deficient perovskite BaFe0.9-xY0.1CoxO3-δ (0 ≤ x ≤ 0.15)
Authors: Urusova, A. S.
Bryuzgina, A. V.
Cherepanov, V. A.
Battle, P. D.
Chin, C. -M.
Issue Date: 2017
Publisher: Elsevier Ltd
Citation: Synthesis and characterization of the oxygen-deficient perovskite BaFe0.9-xY0.1CoxO3-δ (0 ≤ x ≤ 0.15) / A. S. Urusova, A. V. Bryuzgina, V. A. Cherepanov, et al. — DOI 10.1016/j.materresbull.2016.09.007 // Materials Research Bulletin. — 2017. — Vol. 85. — P. 90-95.
Abstract: BaFe0.9-xY0.1CoxO3-δ (0 ≤ x ≤ 0.15) is shown to adopt the cubic perovskite structure at temperatures up to 1400 K in air. The oxygen vacancy concentration increases with both cobalt content and temperature, with BaFe0.75Y0.1Co0.15O2.35 being the most oxygen-deficient composition observed. At 700 K the conductivity is ∼2 S cm−1 across the whole composition range. Measurements of the Seebeck coefficient show that holes are the dominant carrier. The coefficient of thermal expansion is essentially constant above 800 K, but not at lower temperatures. Chemical reactivity tests, along with the coefficient of expansion, show that these perovskites would not be suitable electrodes for fuel cells with fluorite electrolytes but they might serve as permeable membranes in catalytic reactors. © 2016 Elsevier Ltd
Keywords: ELECTRICAL PROPERTIES
OXIDES
THERMAL EXPANSION
THERMOGRAVIMETRIC ANALYSIS (TGA)
X-RAY DIFFRACTION
ELECTRIC PROPERTIES
EXPANSION
FUEL CELLS
OXIDES
OXYGEN
PEROVSKITE
THERMAL EXPANSION
THERMOGRAVIMETRIC ANALYSIS
X RAY DIFFRACTION
CATALYTIC REACTOR
COEFFICIENT OF EXPANSION
COMPOSITION RANGES
LOWER TEMPERATURES
OXYGEN DEFICIENT PEROVSKITES
OXYGEN VACANCY CONCENTRATION
PERMEABLE MEMBRANES
SYNTHESIS AND CHARACTERIZATIONS
OXYGEN VACANCIES
URI: http://hdl.handle.net/10995/102214
Access: info:eu-repo/semantics/openAccess
SCOPUS ID: 84986301955
PURE ID: 1187508
d4d9f64f-e0a2-40e6-bf4a-0019c5d45ac0
ISSN: 255408
DOI: 10.1016/j.materresbull.2016.09.007
Appears in Collections:Научные публикации, проиндексированные в SCOPUS и WoS CC

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