Prediction of the magnetocaloric behaviors of the Kekulene structure for the magnetic refrigeration

Abstract

In the last half a century or so, nanomaterials have received considerable attention thanks to their energy-efficient applications. Keeping this in mind and within the framework of my contribution to this scientific area, I firstly determined the magnetic properties and magneto-caloric performance in a Kekulene structure with the spin moment (S = 2) as a model of the nanomaterial. Secondly, I examined the critical behavior of the Kekulene structure with the aim of establishing the magneto-caloric effect around the Curie temperature (TC). Thirdly, I used the modified Arrott plot to provide a detailed analysis of the magnetic phase transition. Lastly, before establishing the relative cooling power and the cooling capacity at ΔH = 0–5 T, I studied changes that both the magnetic entropy and the adiabatic temperature underwent. By and large, it seemed from the results I reached in the analysis of the studied system in this article that the system here is one of the most potential candidates for the magnetic refrigeration.

Keywords

• Magnetocaloric effect
• Magnetic refrigeration
• Kekulene structure
• Hamiltonian
• Spins
• Magnetization-demagnetization