Phase diagrams of a mixed-spin hexagonal Ising nanotube with core-shell structure

Hachem, N.; Badrour, I.A.; Antari, A. El; Lafhal, A.; Madani, M.; Bouziani, M. El

doi:10.1016/j.cjph.2020.07.001

Cited by 28 publications

(5 citation statements)

References 40 publications

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“…It should be noted that the effect of the single‐ion anisotropy on the phase diagram is in excellent agreement with the results obtained in ferrimagnetic nanowire with core‐shell morphology [ 31,35 ] and with alternate layers, [ 36 ] where the nanowire is formed by spin‐3/2 and spin‐1. In addition, it is worthwhile to mention that our characteristic results may be qualitatively compared to previous studies on magnetic nanowires, [ 28,37 ] nanotubes, [ 38–40 ] ferromagnetic thin film [ 41 ] and double perovskite

\left(\text{Sr}\right)_{2} \left(\text{CrIrO}\right)_{6}

. [ 42 ] The results obtained for the critical temperature are in very good agreement with the studies of Salmon et al [ 43 ] and Santos et al, [ 44 ] where the spin‐1 random Blume–Capel model with infinite range interactions was adopted.…”

Section: Resultssupporting

confidence: 89%

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

Jalal,

Saadi,

Hasnaoui

et al. 2023

Physica Status Solidi (b)

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The effect of single‐ion anisotropy is investigated on a mixed‐spin (1, 3/2) square Ising nanowire with square ferromagnetic shell and negative core–shell exchange coupling using Monte Carlo simulation. Depending on the Hamiltonian parameters, three different topologies of the phase diagram in the (anisotropy, temperature) plane are found. The tricritical point appears for and effects. For influence of , there is no tricritical point in the phase diagram. The first‐order lines and critical endpoints are also obtained. Some important phenomena such as compensation behavior and rich variety of hysteresis loops are found. The results can be compared with other works, in particular on the nanowire with core–shell structure.

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\left(\text{Sr}\right)_{2} \left(\text{CrIrO}\right)_{6}

Section: Resultssupporting

confidence: 89%

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

Jalal,

Saadi,

Hasnaoui

et al. 2023

Physica Status Solidi (b)

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“…[41] In contrast, for the theoretical analysis of the qualitative behavior of critical phenomena in molecular magnets configured by the mixing of different spins, mixed Ising models have been efficiently used. [42][43][44] The high-spin Ising models are fundamental to the understanding of the thermomagnetic behavior of magnetic crystal structures. Proof of this can be seen in the research on the magnetic behavior of a graphyne bilayer with (2-5/2) spins, where multiple hysteresis loops and double-temperature-compensation phenomena are analyzed, [45] as well as in the deduction of the thermodynamic properties of a polyhedral chain and hysteresis loops of the hexagonal core-shell nanoparticle described by a mixed spin (3/2-5/2) ferrimagnetic Ising model, by means of MC simulations.…”

Section: Introductionmentioning

confidence: 99%

Hysteresis and Double‐Spin Compensation Behaviors in a Ferro‐Ferrimagnetic Model of High Half‐Integer Spins

Madera

Espriella

Burgos

2023

Physica Status Solidi (b)

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Herein, thermomagnetic properties of a ferro‐ferrimagnetic system with magnetic moments of values , and alternating on a square lattice, are investigated. These properties are framed in hysteresis, double‐spin compensation, and discontinuous behavior of the system. Through Monte Carlo simulations, the temperature dependence of the magnetization and magnetic susceptibility of the system for zero and nonzero values of an applied external magnetic field are analyzed. The hysteresis behavior of the model for different temperature values is also studied. It is found that the system experiences double‐spin compensation and multiple hysteresis loops when it is subjected to different values of single‐ion anisotropy and magnetic fields. The increase in the strength of the magnetic field generates discontinuities in the magnetization, and the inversion of its polarity destroys the compensation points. Finally, a phase diagram is presented with the critical, spin compensation, and discontinuous temperatures in terms of the magnetic and anisotropic fields for the ferri‐ and ferromagnetic cases. The results are compared with a recent investigation of this system that does not include the antiferromagnetic next‐nearest‐neighbor interactions, which influences the magnetic behavior of the model.

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“…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). B. Deviren [16] investigated the no equilibrium properties of a kinetic mixed spin (1/2, 1) Ising nanowire system using the Glauber-type stochastic dynamics method, and they presented dynamic phase diagrams with very rich critical behaviors, such as dynamic tricritical point and reentrant phenomena.…”

Section: Introductionmentioning

confidence: 99%

Mean Field Study of a Cylindrical Ferrimagnetic Nanotube with Different Anisotropies

Al Qahoom,

El Kihel,

Aharrouch

et al. 2023

JNanoR

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In this paper, the ferrimagnetic mixed spins (1, 5/2) Blume-Capel model is proposed to investigate the phase diagrams and hysteresis behaviors of a magnetic cylindrical nanotube with a core-shell structure using the mean-field approximation based on the Bogoliubov inequality for the Gibbs free energy. The core sites are occupied by σ= ±1, 0 spins, whereas the shell sites are filled by S= ±5/2, ±3/2, ±1/2 spins. The effects of exchange couplings (Jin, JS) and single-ion anisotropies (DC, DS) on core, shell, and total magnetizations are investigated, as well as hysteresis behaviors. The entropy, free energy, and specific heat are analyzed to establish the stability of the solutions. The presentation and discussion of phase diagrams is detailed. The system shows a first-order and second-order phase transitions, as well as tricritical and critical end- points. In addition, the system shows compensation and reentrant behaviors. Various multiple hysteresis loop behaviors are seen according on the Hamiltonian parameters, such as the presence of triple, quintuple, and septuple hysteresis loops.

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Phase diagrams of a mixed-spin hexagonal Ising nanotube with core-shell structure

Cited by 28 publications

References 40 publications

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

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

Hysteresis and Double‐Spin Compensation Behaviors in a Ferro‐Ferrimagnetic Model of High Half‐Integer Spins

Mean Field Study of a Cylindrical Ferrimagnetic Nanotube with Different Anisotropies

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