Behavior of the magnetocaloric effect in La^sub 0.7^Ba^sub 0.2^Ca^sub 0.1^Mn^sub 1-x^Sn^sub x^O^sub 3^ manganite oxides as promising candidates for magnetic refrigeration

The magnetocaloric effect along with magnetic phase transition in the peroveskite polycrystalline samples La0.7Ba0.2Ca0.1Mn1-xSnxO3 (x = 0 and 0.1) was investigated. The samples were synthesized using conventional solid state reaction at 1400 °C temperature. Magnetization vs. temperature measurement...

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Bibliographic Details
Published in:Physica. B, Condensed matter Condensed matter, 2018-05, Vol.537, p.93
Main Authors: Dhahri, Ja, Mnefgui, Safa, Hassine, A Ben, Tahri, Ta, Oumezzine, M, Hlil, EK
Format: Article
Language:English
Subjects:
Chemical synthesis
Cooling
Curie temperature
Entropy
Ferromagnetism
Magnetic fields
Magnetization
Magnetization curves
Perovskite
Phase transitions
Refrigeration
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Summary:The magnetocaloric effect along with magnetic phase transition in the peroveskite polycrystalline samples La0.7Ba0.2Ca0.1Mn1-xSnxO3 (x = 0 and 0.1) was investigated. The samples were synthesized using conventional solid state reaction at 1400 °C temperature. Magnetization vs. temperature measurements, under a magnetic field of μ0H = 0.05 T, showed a paramagnetic-ferromagnetic transition at Curie temperature, TC, which decreases from 310 K for x = 0–290 K for x = 0.1. A large magnetic entropy change |ΔSM| deduced from isothermal magnetization curves, has been observed in our samples with a peak centered on their respective TC. Interesting values of the relative cooling power (RCP), 237 J kg-1 for x = 0 and 248 J kg-1 x = 0.1, make these samples promising candidates for magnetic refrigeration around room temperature.
ISSN:0921-4526
1873-2135