| Magnetic, thermoelectric properties and magnetocaloric effect of Pr0.7Ba0.3MnO3 perovskite: experimental, DFT calculation and Monte Carlo simulations |
R. Masrour1
, G. Kadim1, M. Ellouze2 |
1Laboratory of Solid Physics, Faculty of Sciences Dhar El Mahraz, Sidi Mohamed Ben Abdellah University, BP 1796 Fez, Morocco
2LMEEM, Faculty of Sciences of Sfax (FSS), University of Sfax , B. P.1171, 3000 Sfax, Tunisia |
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Received: July 8, 2023; Revised: November 2, 2023 Accepted: November 7, 2023. Published online: December 18, 2023. |
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| ABSTRACT |
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The magnetic, electronic, structural, thermoelectric properties and magnetocaloric effect of Pr0.75Ba0.25MnO3 perovskite using, experimental, DFT calculation and Monte Carlo simulations were investigated. The ground state has half-metallic character. Our calculations also show that the Pr0.75Ba0.25MnO3 has a ferromagnetic behavior. Pr0.75Ba0.25MnO3 exhibits p-type behavior with dominant holes as the primary carriers, as indicated by its thermoelectric properties. This system exhibits a ferromagnetic–Paramagnetic transition. We have successfully obtained several properties, including magnetization, specific heat, variation of specific heat, magnetic entropy changes, relative cooling power, and the magnetic hysteresis cycle. For a magnetic field change of 5 T, the maximum value of the magnetic entropy change (∣ΔSmax∣) was approximately 12 J/kg.K, while the relative cooling power (RCP) reached 126 J/kg. The promising potential of the present system for magnetic refrigeration is evident due to its relatively large values of ∣ΔSmax∣ and RCP. Finally, the thermoelectric properties were given. |
| Key words:
MCE · RCP and magnetic entropy changes · Hysteresis cycle and specific heat · Thermoelectric |
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