| Abstrakt: |
This work aims to examine the magnetocaloric properties of the Perovskite GdCuO3, such as the total magnetization, the susceptibility, and the total specific heat, using Monte Carlo simulation in the frame of the Ising model, for various external magnetic fields. Likewise, we have studied the magnetic entropy change ( Δ S m ), the adiabatic temperature change (Δ T ad) , and the relative cooling power (RCP). Hence, for a magnetic field equal to 5 T, the Curie temperature T C of GdCuO3, according to this simulation, is approximately 800 K. Thus, the variation of the Curie temperature is proportional to the external magnetic field applied; in other words, if the value of the external magnetic field rises, the Curie temperature increases as well. Furthermore, for a range of magnetic field values between 1 and 5 T, we noted that the maximum of the magnetic entropy and the adiabatic temperature changes; also, the relative cooling power (RCP) increased, respectively, from 0.219 to 1 J Kg - 1 K - 1 , from 289 to 1100 K, and from 0.61 to 2.95 JKg - 1 . Based on this work's results, we can evaluate that the results of this work have proved the high quality of the perovskite GdCuO3; however, based on the same results, we can conclude that this material is not suitable to be used in magnetic refrigeration. [ABSTRACT FROM AUTHOR] |
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