Mixed spin-3/2 and spin-2 nanowire: magnetic properties and hysteresis behaviors

Abstract

PurposeThe purpose of this article is to investigate the magnetic properties and the hysteresis loops behavior of a ferrimagnetic cubic nanowire with mixed spins SA = 3/2 and SB = 2.Design/methodology/approachWe have used the Monte Carlo simulation to examine the influences of the exchange interaction JB, the crystal field ∆ and the temperature on the magnetic properties and hysteresis loops of the nanowire. More exactly, we have shown the temperature dependence of the sublattice magnetizations (mA and mB) and the total magnetization (M) for several values of the Hamiltonian parameters, as well as the corresponding phase diagrams. Finally, the effect of an external magnetic field is studied by plotting the hysteresis loops of the system for different values of exchange interaction, crystal field and temperature.FindingsThe obtained results show the existence of second-order phase transitions, as well as the compensation behavior. Moreover, according to the values of the Hamiltonian parameters, the system can exhibit one, two or three hysteresis loops.Originality/valueThe magnetic nanowires are of great interest in experimental works, but without theoretical explanations, the experimental results cannot be clarified in depth. For this, we contribute through this theoretical study to understand the nanowires, especially those with mixed spins (2, 3/2).

Magnetic Behavior of Ising Nanowire with Mixed Integer Spins: A Monte Carlo Study

“…When DA/|JAB| increases, the critical temperature increases which is in accordance with the results reported in Figure3. For comparison, the results obtained here are in good agreement with those found for Ising systems with mixed spins[20,29,42].…”

The mixed spin-3/2 and spin-2 Blume-Capel model by renormalization group approach

“…We also remark that as Δ /|J | increases, the critical temperature increases. As a comparison, our phase diagrams look a lot like those plotted by the use of Monte Carlo simulation in the mixed spin-2 and spin-3/2 cubic Ising nanowire (El Kihel et al , 2021) and in the mixed spin-1 and spin-3/2 Ising ferrimagnetic system on square and cubic lattices for equal anisotropic fields (da Silva et al , 2020). Also, our results obtained on the square lattice ( d = 2) are similar to those found in the mixed spin-1 and spin-3/2 ferrimagnetic Ising model using the Monte Carlo simulation (Žukovič and Bobák, 2010), the exact recursion equations on the Bethe lattice (Albayrak, 2003) and the cluster variational method within pair approximation (Tucker, 2001).…”