Temperature-Dependent Structural Behaviour of Samarium Cobalt Oxide
The crystal structure and thermal expansion of the perovskite samarium cobalt oxide (SmCoO3) have been determined over the temperature range 295–1245 K by Rietveld analysis of X-ray powder diffraction data. Polycrystalline samples were prepared by a sol–gel synthesis route followed by high-temperatu...
| Main Authors: | , , , |
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| Format: | Journal Article |
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International Centre for Diffraction Data
2017
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| Online Access: | http://hdl.handle.net/20.500.11937/60300 |
| _version_ | 1848760595517538304 |
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| author | Rowles, Matthew Wang, C. Chen, K. Li, N. |
| author_facet | Rowles, Matthew Wang, C. Chen, K. Li, N. |
| author_sort | Rowles, Matthew |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | The crystal structure and thermal expansion of the perovskite samarium cobalt oxide (SmCoO3) have been determined over the temperature range 295–1245 K by Rietveld analysis of X-ray powder diffraction data. Polycrystalline samples were prepared by a sol–gel synthesis route followed by high-temperature calcination in air. SmCoO3 is orthorhombic (Pnma) at all temperatures and is isostructural with GdFeO3. The structure was refined as a distortion mode of a parent structure. The thermal expansion was found to be non-linear and anisotropic, with maximum average linear thermal expansion coefficients of 34.0(3) × 10−6, 24.05(17) × 10−6, and 24.10(18) × 10−6 K−1 along the a-, b-, and c-axes, respectively, between 814 and 875 K. |
| first_indexed | 2025-11-14T10:18:17Z |
| format | Journal Article |
| id | curtin-20.500.11937-60300 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T10:18:17Z |
| publishDate | 2017 |
| publisher | International Centre for Diffraction Data |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-603002019-02-19T05:35:56Z Temperature-Dependent Structural Behaviour of Samarium Cobalt Oxide Rowles, Matthew Wang, C. Chen, K. Li, N. The crystal structure and thermal expansion of the perovskite samarium cobalt oxide (SmCoO3) have been determined over the temperature range 295–1245 K by Rietveld analysis of X-ray powder diffraction data. Polycrystalline samples were prepared by a sol–gel synthesis route followed by high-temperature calcination in air. SmCoO3 is orthorhombic (Pnma) at all temperatures and is isostructural with GdFeO3. The structure was refined as a distortion mode of a parent structure. The thermal expansion was found to be non-linear and anisotropic, with maximum average linear thermal expansion coefficients of 34.0(3) × 10−6, 24.05(17) × 10−6, and 24.10(18) × 10−6 K−1 along the a-, b-, and c-axes, respectively, between 814 and 875 K. 2017 Journal Article http://hdl.handle.net/20.500.11937/60300 10.1017/s0885715617000872 International Centre for Diffraction Data fulltext |
| spellingShingle | Rowles, Matthew Wang, C. Chen, K. Li, N. Temperature-Dependent Structural Behaviour of Samarium Cobalt Oxide |
| title | Temperature-Dependent Structural Behaviour of Samarium Cobalt Oxide |
| title_full | Temperature-Dependent Structural Behaviour of Samarium Cobalt Oxide |
| title_fullStr | Temperature-Dependent Structural Behaviour of Samarium Cobalt Oxide |
| title_full_unstemmed | Temperature-Dependent Structural Behaviour of Samarium Cobalt Oxide |
| title_short | Temperature-Dependent Structural Behaviour of Samarium Cobalt Oxide |
| title_sort | temperature-dependent structural behaviour of samarium cobalt oxide |
| url | http://hdl.handle.net/20.500.11937/60300 |