Modeling the magnetic properties of La0.62Er0.05Ba0.33Fe0.02Mn0.8O3: Mean field study and Bean Rodbell model
Abstract
The Brillouin function, the phase transition and the related magnetic properties in
La0062Er0005Ba0033Fe002Mn008O3 perovskite have been studied using Bean-Rodbell model. The
Brillouin function allows determining the total momentum J and the mean filed exchange
parameter ! of the perovskite. The mean-filed equation draws the system to second order phase
transition. These constants were used to stimulate the experimental isotherms M (H$ T ) by mean-
field theory. The predicted results are compared to the available experimental data. It is noted that
a good agreement has been found, with minor discrepancies, between theoretical and experimental
data.