Please use this identifier to cite or link to this item: http://hdl.handle.net/10995/66231
Title: Crystal structure and properties of novel oxide Sm0.9Ca1.1Fe0.7Co0.3O4–δ
Authors: Galayda, A. P.
Volkova, N. E.
Dyagileva, A. I.
Gavrilova, L. Ya.
Cherepanov, V. A.
Battle, P. D.
Issue Date: 2018
Publisher: Уральский федеральный университет
Citation: Crystal structure and properties of novel oxide Sm0.9Ca1.1Fe0.7Co0.3O4–δ / A. P. Galayda, N. E. Volkova, A. I. Dyagileva, L. Ya. Gavrilova, V. A. Cherepanov, P. D. Battle // Chimica Techno Acta. — 2018. — Vol. 5, No. 4. — P. 159-165.
Abstract: Sm0.9Ca1.1Fe0.7Co0.3O4–δ oxide with the K2NiF4‑type structure was prepared using a glycerin-nitrate technique. The XRD pattern of Sm0.9Ca1.1Fe0.7Co0.3O4–δ was refined by the Rietveld method within an orthorhombic structure (space group Bmab). The electrical conductivity, Seebeck coefficient, and thermal expansion of Sm0.9Ca1.1Fe0.7Co0.3O4–δ were measured depending on temperature in air. The change of oxygen nonstoichiometry determined by TGA in air does not exceed 0.01. The oxygen content in Sm0.9Ca1.1Fe0.7Co0.3O4–δ determined by the reduction in a hydrogen flux is equal to 3.96 ± 0.01. The positive value of Seebeck coefficient indicates that the predominant charge carriers in the oxide studied are electron holes.
Keywords: COMPLEX OXIDE
RUDDLESDEN-POPPER PHASE
CRYSTAL STRUCTURE
OXYGEN NONSTOICHIOMETRY
ELECTROCONDUCTIVITY
THERMAL EXPANSION
URI: http://hdl.handle.net/10995/66231
RSCI ID: https://elibrary.ru/item.asp?id=36845721
ISSN: 2409-5613 (Print)
2411-1414 (Online)
DOI: 10.15826/chimtech.2018.5.4.01
metadata.dc.description.sponsorship: This work was supported in parts by Act 211 Government of the Russian Federation, agreement 02.A03.21.0006.
Origin: Chimica Techno Acta. 2018. Vol. 5. № 4
Appears in Collections:Chimica Techno Acta

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