<p>This research employs Monte Carlo simulations to investigate the magnetic characteristics of a one-dimensional composite made of the nanotube encapsulated with X₃₆. A mixed-spin (3/2, 2) Ising model was constructed to analyze the impact of magnetic site occupancy concentrations (<i>P</i>_<i>a</i>, <i>P</i>_<i>b</i>), external magnetic field amplitude (<i>h</i>_<i>0</i>), field period (<i>τ</i>), and temperature (<i>T</i>) on the thermodynamic properties and dynamic hysteresis of the system. Here, <i>P</i>_<i>a</i> and <i>P</i>_<i>b</i> denote the fractions of occupied magnetic sites on the nanotube and X₃₆ sublattices, respectively. These occupancy parameters are randomly generated at the beginning and remain fixed throughout the simulation and are not governed by adsorption–desorption kinetics. The multi-loop hysteresis behavior observed in the system originates from the competing between the two sublattices (spin-2 on the nanotube and spin-3/2 on X₃₆) that offers potential for multilevel magnetic memory applications. Within this framework, changes in three key hysteresis parameters—hysteresis loop area (<i>HLA</i>), coercivity (<i>H</i>_<i>C</i>), and remanent magnetization (<i>M</i>_<i>r</i>)—were investigated. Results show that lowering both <i>P</i>_<i>a</i> and <i>P</i>_<i>b</i> concentrations linearly reduces the phase transition temperature (<i>T</i>_<i>C</i>), with <i>P</i>_<i>b</i> exhibiting a stronger influence.</p>