Magnetic Phase Transitions and Mixed Spin in Double Perovskite $Sr_{2}FeMoO_{6}$
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arXiv
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| Format: | Preprint |
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2025
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| author | Khaireddine, Said Assad, Redouane Falaki, Mohammed El Lamara, Rachid Ahl Drissi, Lalla Btissam |
| author_facet | Khaireddine, Said Assad, Redouane Falaki, Mohammed El Lamara, Rachid Ahl Drissi, Lalla Btissam |
| contents | The magnetic properties of the double perovskite oxide $Sr_{2}$FeMo$O_{6}$ are analyzed using a mixed-spin Ising model with spins $\left( \frac{1}{2},\frac{5}{2}\right) $ in the presence of a random crystal field $Δ$ and exchange interactions $ J $ on a three-dimensional (3D) cubic lattice. The study employs both the Mean-Field Approximation (MFA) based on the Bogoliubov inequality for Gibbs free energy and Monte Carlo (MC) simulations using the Metropolis algorithm to provide a comprehensive analysis of the system's phase transitions and magnetization behavior, with focusing on the role of Fe and Mo sublattices. We establish the ground-state phase diagram, identifying multiple stable magnetic configurations and first-order transitions at low temperatures. Indicate compensation temperature $T_{comp}$. This work provides deeper insight into the thermodynamic, physics statistic and magnetic properties of $Sr_{2}$FeMo$O_{6}$, with implications for future applications in spintronics and magnetic storage technologies. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2503_05002 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Magnetic Phase Transitions and Mixed Spin in Double Perovskite $Sr_{2}FeMoO_{6}$ Khaireddine, Said Assad, Redouane Falaki, Mohammed El Lamara, Rachid Ahl Drissi, Lalla Btissam Statistical Mechanics Strongly Correlated Electrons The magnetic properties of the double perovskite oxide $Sr_{2}$FeMo$O_{6}$ are analyzed using a mixed-spin Ising model with spins $\left( \frac{1}{2},\frac{5}{2}\right) $ in the presence of a random crystal field $Δ$ and exchange interactions $ J $ on a three-dimensional (3D) cubic lattice. The study employs both the Mean-Field Approximation (MFA) based on the Bogoliubov inequality for Gibbs free energy and Monte Carlo (MC) simulations using the Metropolis algorithm to provide a comprehensive analysis of the system's phase transitions and magnetization behavior, with focusing on the role of Fe and Mo sublattices. We establish the ground-state phase diagram, identifying multiple stable magnetic configurations and first-order transitions at low temperatures. Indicate compensation temperature $T_{comp}$. This work provides deeper insight into the thermodynamic, physics statistic and magnetic properties of $Sr_{2}$FeMo$O_{6}$, with implications for future applications in spintronics and magnetic storage technologies. |
| title | Magnetic Phase Transitions and Mixed Spin in Double Perovskite $Sr_{2}FeMoO_{6}$ |
| topic | Statistical Mechanics Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2503.05002 |