Thermodynamic and Electrophysical Properties of Nanosized LaMeFeCrMnO6.5 (Me = Li, Na, K) Ferro-Chromo-Manganites
- Authors: Sagintaeva Z.I.1, Kasenova S.B.1, Ermaganbetov K.T.2, Kakenov K.S.3, Esenbaeva G.A.3, Kasenov B.K.1
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Affiliations:
- Abishev Chemical–Metallurgical Institute
- Buketov Karaganda State University
- Karaganda Economics University Kazpotrebsoyuz
- Issue: Vol 92, No 4 (2018)
- Pages: 760-767
- Section: Physical Chemistry of Nanoclusters and Nanomaterials
- URL: https://journals.rcsi.science/0036-0244/article/view/169972
- DOI: https://doi.org/10.1134/S0036024418040118
- ID: 169972
Cite item
Abstract
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 Φxx(T) are calculated. The temperature dependences of the electrical capacity (C), dielectric permeability (ε) and electrical resistivity (R) studied in the temperature range of 293–483 K show that these materials are also of interest for microelectronics.
About the authors
Zh. I. Sagintaeva
Abishev Chemical–Metallurgical Institute
Email: kasenov1946@mail.ru
Kazakhstan, Karaganda, 100009
Sh. B. Kasenova
Abishev Chemical–Metallurgical Institute
Email: kasenov1946@mail.ru
Kazakhstan, Karaganda, 100009
K. T. Ermaganbetov
Buketov Karaganda State University
Email: kasenov1946@mail.ru
Kazakhstan, Karaganda, 470074
K. S. Kakenov
Karaganda Economics University Kazpotrebsoyuz
Email: kasenov1946@mail.ru
Kazakhstan, Karaganda, 100000
G. A. Esenbaeva
Karaganda Economics University Kazpotrebsoyuz
Email: kasenov1946@mail.ru
Kazakhstan, Karaganda, 100000
B. K. Kasenov
Abishev Chemical–Metallurgical Institute
Author for correspondence.
Email: kasenov1946@mail.ru
Kazakhstan, Karaganda, 100009