A discussion on the magnetization calculation in polycrystalline antiferromagnetic system: Application to EuTiO3

In this work a numerical methodology is theoretically proposed to calculate the magnetization of a polycrystalline system, considering a microscopic Hamiltonian model, which describes a magnetic system consisting of two sublattices of different magnetic ions coupled by exchange interactions and with parallel and perpendicular direction of the magnetic field. The influence of changing the applied magnetic field direction on an antiferromagnetic system was systematically analyzed. The proposed numerical method was applied to the cubic perovskite EuTiO3 and a good agreement with the experimental data was obtained. - Highlights: → A numerical methodology is theoretically proposed to calculate the magnetization of a polycrystalline system. → Proposed numerical method was applied to the cubic perovskite EuTiO3. → Influence of changing the directions of applied magnetic field on an antiferromagnetic system was systematically analyzed.