Critical Parameters and Magnetocaloric Effect of the La_5/8Ca_3/8Mn_0.9750Pd_0.025O₃ Compound

L. V. Bau, N. M. An

Hong Duc University, Thanh Hoa, Vietnam.

DOI: 10.4236/msa.2014.512086                

Abstract

The La_5/8Ca_3/8Mn_0.9750Pd_0.025O₃ compound was studied using DC magnetization measurements. The data were analyzed in the paramagnetic-ferromagnetic phase transition region by the Arrott plot method. The results show the Curie temperature T_C ~ 247.8 K and the critical exponents of b = 0.48633, g = 1.18623 and d = 3.431682. The values of the critical exponents are between the mean- field theory and 3D Ising model. The magnetocaloric value is ~5 J/kgK, extracted from the M(H) curves.

Keywords

Magnetocaloric, Critical Parameters, Perovskite

Conflicts of Interest

The authors declare no conflicts of interest.

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