Research output: Contribution to journal › Article › peer-review
Research output: Contribution to journal › Article › peer-review
}
TY - JOUR
T1 - CRYSTAL STRUCTURE AND PROPERTIES OF NOVEL OXIDE SM0.9CA1.1FE0.7CO0.3O4-δ
AU - Galayda, A. P.
AU - Volkova, N. E.
AU - Dyagileva, A. I.
AU - Gavrilova, L. Ya.
AU - Cherepanov, V. A.
AU - Battle, P. D.
PY - 2018
Y1 - 2018
N2 - 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.
AB - 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.
UR - https://www.elibrary.ru/item.asp?id=36845721
U2 - 10.15826/chimtech.2018.5.4.01
DO - 10.15826/chimtech.2018.5.4.01
M3 - Article
VL - 5
SP - 159
EP - 165
JO - Chimica Techno Acta
JF - Chimica Techno Acta
SN - 2409-5613
IS - 4
ER -
ID: 29498172