| Autor: |
Chizhova, E. A., Klyndyuk, A. I., Zhuravleva, Ya. Yu., Shevchenko, S. V. |
| Předmět: |
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| Zdroj: |
Glass Physics & Chemistry; Feb2023, Vol. 49 Issue 1, p57-62, 6p |
| Abstrakt: |
NdBa1 –xMgxFeCo0.5Cu0.5O5 + δ (0.00 ≤ x ≤ 0.40) double perovskites are synthesized by the ceramic method and their structure, oxygen nonstoichiometry (δ), and thermal and electrical transport properties are studied. NdBa1 –xMgxFeCo0.5Cu0.5O5 + δ compounds have a tetragonal structure (space group P4/mmm) and are semiconductors of the p-type, whose electrical conductivity characteristics at elevated temperatures changes to metal-like characteristics due to the release of oxygen from the samples (δ). The partial replacement of barium with magnesium in NdBaFeCo0.5Cu0.5O5 + δ leads to a decrease in the oxygen content (δ) in the solid solutions formed in this case, an increase in the size of their unit cell and the thermo-EMF coefficient, and a decrease in the thermal stability, linear thermal expansion coefficient, and electrical conductivity. The values of electrical transport energy, weighted mobility, and concentration of charge carriers in the studied materials are calculated. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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