Abstract
A single-phase material based on the complex oxide Ca2Fe2O5 doped with bismuth was synthesized by glycine-nitrate combustion. Characterization by x-ray diffractometry, helium pycnometry, scanning electron microscope, and elemental analysis showed that the material was isostructural to brownmillerite. The optimum temperature for the synthesis of the material was about 650°C and the material had thermal stability over a wide temperature range according to results of complex thermal analysis together with mass spectrometry. The sintering temperature and thermal expansion coefficient of the material were determined using a dilatometry method.
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