Synthesis and X-Ray Diffraction and Calorimetric Studies
of LaLiMnFeO₅ and LaCsMnFeO₅ Ferrites

B. K. Kasenov, E. S. Mustafin, M. A. Akubaeva, Zh. I. Sagintaeva, S. T. Edil’baeva,
Sh. B. Kasenova, S. Zh. Davrenbekov, and O. I. Zharkeshov

AO “Fitokhimiya Research and Production Center”, Ministry of Education and Science of the Kazakhstan Republic,
ul. Gazalieva 4, Karaganda, 470032 Kazakhstan

Received June 15, 2007

Abstract—Ferrites LaLiMnFeO₅ and LaCsMnFeO₅ were synthesized for the first time by ceramic technology
from mixtures of lanthanum(III), manganese, and iron(III) oxides with lithium or cesium carbonate. The com-
pounds were shown by X-ray diffraction to crystallize in the orthorhombic system; the unit cell parameters were
determined. The heat capacities were found experimentally for 298.15–673 K. Equations for the heat capacities
as a function of temperature were derived and used to calculate the thermodynamic functions S⁰(T),
H⁰(T) H⁰(298.15), and (T) for the above temperature range.

DOI: 10.1134/S0036023608090179

Pleiades Publishing home page | journal home page | top

If you have any problems with this server, contact webmaster.