Abstract
In this work, we used the mean-field theory (MFT) to estimate the spontaneous magnetization Mspont(T) from the dependence of magnetic entropy change on magnetization, \(- \Delta S_{M}\) vs. M2 in Gd3Ni2 and Gd3CoNi systems. The obtained Mspont(T) values are in good agreement with those found from the classical extrapolation from the Arrott plots (H/M vs. M2), confirming that the MFT is a valid approach to estimate the spontaneous magnetization. An excellent agreement has been found between the \(- \Delta S_{M}\) values estimated by Landau theory and those obtained using the classical Maxwell relation.
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Khedmi, N., Khadhraoui, S., Hammami, H. et al. Estimation of the Spontaneous Magnetization and the Magnetic Entropy Change in Gd3Ni2 and Gd3CoNi Systems using the Landau Theory. J Low Temp Phys 204, 235–241 (2021). https://doi.org/10.1007/s10909-021-02609-4
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DOI: https://doi.org/10.1007/s10909-021-02609-4