Crystal structure and properties of novel oxide Sm0.9Ca1.1Fe0.7Co0.3O4-d
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 the...
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| Format: | Article |
| Language: | English |
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Ural Federal University
2018-12-01
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| Series: | Chimica Techno Acta |
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| Online Access: | https://chimicatechnoacta.ru/article/view/3492 |
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| author | Anastasia P. Galayda Nadezhda E. Volkova Anastasia I. Dyagileva Ludmila Ya. Gavrilova Vladimir A. Cherepanov Peter D. Battle |
| author_facet | Anastasia P. Galayda Nadezhda E. Volkova Anastasia I. Dyagileva Ludmila Ya. Gavrilova Vladimir A. Cherepanov Peter D. Battle |
| author_sort | Anastasia P. Galayda |
| collection | DOAJ |
| description | 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. |
| format | Article |
| id | doaj-art-08e9fc7a2d054a098afebf16f6aaef66 |
| institution | OA Journals |
| issn | 2411-1414 |
| language | English |
| publishDate | 2018-12-01 |
| publisher | Ural Federal University |
| record_format | Article |
| series | Chimica Techno Acta |
| spelling | doaj-art-08e9fc7a2d054a098afebf16f6aaef662025-08-20T02:03:23ZengUral Federal UniversityChimica Techno Acta2411-14142018-12-015415916510.15826/chimtech.2018.5.4.012908Crystal structure and properties of novel oxide Sm0.9Ca1.1Fe0.7Co0.3O4-dAnastasia P. Galayda0Nadezhda E. Volkova1Anastasia I. Dyagileva2Ludmila Ya. Gavrilova3Vladimir A. Cherepanov4Peter D. Battle5Ural Federal University, EkaterinburgUral Federal University, EkaterinburgUral Federal University, EkaterinburgUral Federal University, EkaterinburgUral Federal University, EkaterinburgUniversity of Oxford, OxfordSm0.9Ca1.1Fe0.7Co0.3O4-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.https://chimicatechnoacta.ru/article/view/3492complex oxideruddlesden-popper phasecrystal structureoxygen nonstoichiometry, electroconductivitythermal expansion |
| spellingShingle | Anastasia P. Galayda Nadezhda E. Volkova Anastasia I. Dyagileva Ludmila Ya. Gavrilova Vladimir A. Cherepanov Peter D. Battle Crystal structure and properties of novel oxide Sm0.9Ca1.1Fe0.7Co0.3O4-d Chimica Techno Acta complex oxide ruddlesden-popper phase crystal structure oxygen nonstoichiometry, electroconductivity thermal expansion |
| title | Crystal structure and properties of novel oxide Sm0.9Ca1.1Fe0.7Co0.3O4-d |
| title_full | Crystal structure and properties of novel oxide Sm0.9Ca1.1Fe0.7Co0.3O4-d |
| title_fullStr | Crystal structure and properties of novel oxide Sm0.9Ca1.1Fe0.7Co0.3O4-d |
| title_full_unstemmed | Crystal structure and properties of novel oxide Sm0.9Ca1.1Fe0.7Co0.3O4-d |
| title_short | Crystal structure and properties of novel oxide Sm0.9Ca1.1Fe0.7Co0.3O4-d |
| title_sort | crystal structure and properties of novel oxide sm0 9ca1 1fe0 7co0 3o4 d |
| topic | complex oxide ruddlesden-popper phase crystal structure oxygen nonstoichiometry, electroconductivity thermal expansion |
| url | https://chimicatechnoacta.ru/article/view/3492 |
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