Oxygen release technique: Ba0.5Sr0.5(Co0.8Fe0.2)0.85Ta0.15O3
| Autor: | Bogdan V. Voloshin, A. P. Nemudry, V.A. Eremin, M.P. Popov |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
010302 applied physics
Diffraction Phase transition Continuous phase modulation Materials science Scanning electron microscope Diagram Analytical chemistry chemistry.chemical_element 02 engineering and technology Conductivity 021001 nanoscience & nanotechnology 01 natural sciences Oxygen chemistry Phase (matter) 0103 physical sciences 0210 nano-technology |
| Zdroj: | Materials Today: Proceedings. 25:455-457 |
| ISSN: | 2214-7853 |
| DOI: | 10.1016/j.matpr.2019.12.169 |
| Popis: | The work is related to the development of novel oxygen release technique to obtain continuous phase diagrams of oxides with mixed ionic-electronic conductivity. Promising perovskite-like composition Ba0.5Sr0.5(Co0.8Fe0.2)0.85Ta0.15O3-δ (BSCFT15) was chosen as a sample. As-prepared samples of BSCFT15 was studied by means of X-Ray diffraction analysis and scanning electron microscopy. Continuous equilibrium phase «3-δ – lg pO2 – T» diagram obtained by oxygen release technique is presented for the composition BSCFT15 for the first time. The diagrams allowed us to detect the new phase transition P1 (low temperature phase, Pm-3m) – P2 (high-temperature phase, Fm-3c). |
| Databáze: | OpenAIRE |
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