Publications by authors named "Ekaterina V Tsipis"
X-ray diffraction analysis of the pseudo-binary SrFeVO system showed that the solid solution formation limit at atmospheric oxygen pressure corresponds to ≈ 0.1. SrFeVO has a cubic perovskite-type structure with the 3¯ space group.
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- The study investigates the structure and oxygen non-stoichiometry of perovskite-type PrBaSrFeO synthesized at high temperatures, confirming a cubic structure through X-ray diffraction but showing short-range order through electron diffraction.
- It finds that increased oxygen deficiency promotes ordering in the material, while substituting barium with strontium has the opposite effect, affecting the defect equilibrium.
- The research also measures oxygen content in relation to temperature and pressure, revealing how variations in strontium concentration influence oxygen vacancy behavior and p-type carrier concentration in the oxides.
Mössbauer spectroscopy and magnetization studies of YBaCo(4-x)Fe(x)O(7+δ) (x = 0-0.8) oxidized at 0.21 and 100 atm O(2), indicate an increasing role of penta-coordinated Co(3+) states when the oxygen content approaches 8-8.
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