Russian Journal of Physical Chemistry A

, Volume 92, Issue 4, pp 760–767 | Cite as

Thermodynamic and Electrophysical Properties of Nanosized LaMeFeCrMnO6.5 (Me = Li, Na, K) Ferro-Chromo-Manganites

  • B. K. Kasenov
  • Zh. I. Sagintaeva
  • Sh. B. Kasenova
  • K. T. Ermaganbetov
  • K. S. Kakenov
  • G. A. Esenbaeva
Physical Chemistry of Nanoclusters and Nanomaterials
  • 4 Downloads

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 Φ xx (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.

Keywords

lanthanum alkali metals ferro-chromo-manganite dynamic calorimetry thermodynamic functions electrophysical characteristics 

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Copyright information

© Pleiades Publishing, Ltd. 2018

Authors and Affiliations

  • B. K. Kasenov
    • 1
  • Zh. I. Sagintaeva
    • 1
  • Sh. B. Kasenova
    • 1
  • K. T. Ermaganbetov
    • 2
  • K. S. Kakenov
    • 3
  • G. A. Esenbaeva
    • 3
  1. 1.Abishev Chemical–Metallurgical InstituteKaragandaKazakhstan
  2. 2.Buketov Karaganda State UniversityKaragandaKazakhstan
  3. 3.Karaganda Economics University KazpotrebsoyuzKaragandaKazakhstan

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