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Magnetocaloric effect and magnetic behavior of polyphenylene dendrimers alternate layers of a mixed spin (7/2, 2): A Monte Carlo investigation

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  • Jerrari, M.
  • Masrour, R.
  • Sahdane, T.

Abstract

In this investigation, through the Monte Carlo simulation, we have studied the magnetocaloric effect and the magnetic behavior of the polyphenylene dendrimers' alternate layers with mixed spins 7/2 and 2. The established ground state of this system has been given and discussed. Additionally, we determine that the reduced temperature (tc) varies with changes in the number of layers (L) and reduced exchange interaction(RSS). Also, the influence of the parameter’s physique L, RSS, reduced exchange interaction(Rσσ), and the reduced crystal field (d) on the total magnetizations and the hysteresis loop are analyzed. In fact, with higher reduced external magnetic fields (H/JSσ), the maximum Cp decreases, and the magnetic entropy change (-ΔSm) and the adiabatic temperature change (ΔTa) increase. Finally, the relative cooling power (RCP) rises with increasing values of H/JSσ and RCP diminishes with increasing RSS or |d|.

Suggested Citation

  • Jerrari, M. & Masrour, R. & Sahdane, T., 2025. "Magnetocaloric effect and magnetic behavior of polyphenylene dendrimers alternate layers of a mixed spin (7/2, 2): A Monte Carlo investigation," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 671(C).
    • Handle: RePEc:eee:phsmap:v:671:y:2025:i:c:s0378437125003152
    DOI: 10.1016/j.physa.2025.130663
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