Synthesis and magnetic properties of perovskite manganite La0.8Ca0.15Na0.05Mn0.8Fe0.2O3

Synthesis and magnetic properties of perovskite manganite

Abstract

The current study describes the synthesis of the perovskite manganite La_0.8Ca_0.15Na_0.05Mn_0.8Fe_0.2O₃ using Pechini method. The Rietveld analysis of the powder X-ray diffraction data verified the presence of a single phase exhibiting orthorhombic symmetry with the Pnma space group. The phase undergoes a shift from paramagnetism to ferromagnetism when the temperature reaches the Curie temperature of 111 K. A positive Weiss constant (Θ) and a greater effective magnetic moment than the anticipated value suggest the presence of dominating ferromagnetic interactions in the phase.