Magnetic Behavior of Spin Chain with Hexagonal Shell and Negative Core-Shell Exchange Coupling: Monte Carlo Simulation and Mean Field Approach

Abstract

Using Monte Carlo simulation and mean field approximation, we studied the magnetic properties of spin-3/2 chain with hexagonal spin-1/2 shell and negative core-shell exchange coupling. The obtained results show that the spins 3/2 in the core have an important influence on the magnetic behavior of the system such as the appearance of compensation temperatures as well as first- and second-order phase transitions. Moreover, we investigated the effects of exchange interactions and anisotropy on the phase diagrams of the system.

Single‐Ion Anisotropy Effect on the Critical and Hysteresis Behaviors of a Mixed‐Spin (1, 3/2) Square Ising Nanowire

“…Due to the simplicity and practicality of Ising models, core‐shell nanowires have the particularity of being represented by various single‐ and mixed‐spin Ising systems and that can be solved approximately or numerically allowing comparison with experiment. Recently, several methods have been applied to the examination of these systems, such as effective field theory (EFT), [ 19–21 ] mean field theory (MFT), [ 22–24 ] Green's function method, [ 25 ] and Monte Carlo simulation (MCS). [ 24,26–29 ] These studies are of great significance not only for the theoretical study of ferrimagnetic nanowires but also for experimental and practical applications.…”

“…Recently, several methods have been applied to the examination of these systems, such as effective field theory (EFT), [ 19–21 ] mean field theory (MFT), [ 22–24 ] Green's function method, [ 25 ] and Monte Carlo simulation (MCS). [ 24,26–29 ] These studies are of great significance not only for the theoretical study of ferrimagnetic nanowires but also for experimental and practical applications. Indeed, Wang et al [ 30 ] studied the influence of single‐ion anisotropy on the critical and hysteresis behavior of a mixed‐spin (1, 3/2) cylindrical nanowire using Monte Carlo simulation.…”

Mean Field Study of a Cylindrical Ferrimagnetic Nanotube with Different Anisotropies

“…On the other hand, magnetic nanomaterials have been extensively theoretically investigated using various models and approaches [12][13][14][15][16][17][18][19]. For example, N. Hachem et al [13] used the mean field approximation (MFA) to investigate the effects of exchange couplings and the crystal field on the magnetizations and phase diagrams of a ferrimagnetic mixed-spin (1/2, 3/2) nanotube with a core-shell structure, obtaining first and second-order phase transitions and compensation behaviors.. A. Kadiri et al [15] have also explored the phase diagrams, magnetic susceptibility, and hysteresis loops of ferromagnetic mixed spin-1/2 core and spin-3/2 shell Ising nanoparticles using Monte Carlo Simulation (MCS).…”