Thermodynamic and Electrophysical Properties of Nanosized LaMeFeCrMnO6.5 (Me = Li, Na, K) Ferro-Chromo-Manganites
| Autor: | K. S. Kakenov, B. K. Kasenov, K. T. Ermaganbetov, Sh. B. Kasenova, Zh. I. Sagintaeva, G. A. Esenbaeva |
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| Rok vydání: | 2018 |
| Předmět: |
Materials science
business.industry Analytical chemistry 02 engineering and technology Calorimetry Dielectric Atmospheric temperature range 010402 general chemistry 021001 nanoscience & nanotechnology Alkali metal 01 natural sciences Heat capacity 0104 chemical sciences Electrical resistivity and conductivity visual_art visual_art.visual_art_medium Microelectronics Ceramic Physical and Theoretical Chemistry 0210 nano-technology business |
| Zdroj: | Russian Journal of Physical Chemistry A. 92:760-767 |
| ISSN: | 1531-863X 0036-0244 |
| DOI: | 10.1134/s0036024418040118 |
| Popis: | Ferro-chromo-manganites with compositions LaMeFeCrMnO6.5 (Me = Li, Na, K) are synthesized via ceramic technology from La2O3 (special purity grade), Fe2O3, Cr2O3, Mn2O3, and carbonates of alkali metals (analytical grade). The individuality of the resulting compounds is confirmed via X-ray phase analysis. The heat capacity of nanosized LaMeFeCrMnO6.5 (Me = Li, Na, K) ferro-chromo-manganites is measured via dynamic calorimetry in the temperature interval of 298.15–673 K on an IT-S-400 apparatus. The values of C°p(T) and thermodynamic functions H°(T)–H°(298.15), S°(T), and Φ xx (T) are calculated. The temperature dependences of the electrical capacity (C), dielectric permeability (e) and electrical resistivity (R) studied in the temperature range of 293–483 K show that these materials are also of interest for microelectronics. |
| Databáze: | OpenAIRE |
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