A discussion on the magnetization calculation in polycrystalline antiferromagnetic system: Application to EuTiO3 |
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| Authors: | BP Alho A Magnus G CarvalhoPJ von Ranke |
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| Institution: | a Instituto de Física ‘Armando Dias Tavares’, Universidade do Estado do Rio de Janeiro, UERJ, Rua São Francisco Xavier, 524, 20550-013 Rio de Janeiro, Brazil
b Divisão de Metrologia de Materiais, Instituto Nacional de Metrologia, Normalização e Qualidade Industrial (INMETRO), 25250-020 Duque de Caxias, RJ, Brazil |
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| Abstract: | 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. |
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| Keywords: | Magnetocaloric effect Antiferromagnetic EuTiO3 |
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