Dilution effects on compensation temperature in nano-trilayer graphene structure: Monte Carlo study

Fadil, Z.; Qajjour, M.; Mhirech, A.; Kabouchi, B.; Benomar, W. Ousi

doi:10.1016/j.physb.2019.03.006

Cited by 72 publications

(14 citation statements)

References 35 publications

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“…In literature recent investigations on compensation on different lattice structures and interesting unconventional systems include: In [48], by MFA and EFA and in [49], by MC simulations with Wolff single cluster Algorithm, a spin-1/2 pure Ising trilayer on square lattice was investigated and the authors have shown that under certain range of different types of interaction strengths, different temperature dependencies of sublattice magnetisations cause the compensation point to appear. Through MC simulation it is shown in [40], with reduction in dilution probability, compensation temperature, increases in an ABA system and decreases in BAB systems, in nanotrilayer graphene structure. In [41], by the MC simulational approach, existence of two compensation temperatures in a mixed spin (7/2, 1) antiferromagnetic ovalene nanostructures is reported.…”

Section: Introductionmentioning

confidence: 96%

Compensation and its systematics in spin-1/2 Ising trilayered triangular ferrimagnet

Chandra

2020

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We present a Monte Carlo study on a trilayered ferrimagnetic Ising system on triangular lattice, with s = 1/2 and three coupling constants. Three layers, making up the bulk, is formed completely by either A or B type of atoms. The interactions between like atoms (A-A; B-B) are ferromagnetic and between unlike ones (A-B) are anti-ferromagnetic. Two distinct trilayer compositions: AAB and ABA, are studied via Metropolis single spin flip algorithm and the location of the critical points (sublattice magnetisations vanish, leading to zero bulk magnetisation) and the compensation points (bulk magnetisation vanishes but nonzero sublattice magnetisations exist) are estimated and conditions for the existence of compensation points are determined. Close range simulations with variable lattice sizes for compensation point and Binder's cumulant crossing technique for critical points are employed for analysis. Comprehensive phase diagrams are obtained in the Hamiltonian parameter space and morphological studies at critical and compensation temperatures for both the configurations are also reported.

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Section: Introductionmentioning

confidence: 96%

Compensation and its systematics in spin-1/2 Ising trilayered triangular ferrimagnet

Chandra

2020

Preprint

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“…The objective is to study the influence of the Gaussian random external magnetic field on the compensation phenomenon associated with such a trilayered ferrimagnet. To probe compensation, numerical studies have been performed on equilibrium (field-free and in presence of static fields) properties of the layered Ising ferrimagnets on different lattice geometries [22][23][24][25][26]. But trilayered ferrimagnetic superlattices have not received that much of attention as bilayers and multilayers have.…”

Section: Introductionmentioning

confidence: 99%

Effect of a Gaussian Random External Magnetic Field with Spatio-temporal Variation on Compensation in Ising Spin-1/2 Trilayered Square Ferrimagnets

Chandra¹

2022

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In this work, an extensive Metropolis Monte Carlo simulation is performed to investigate the steady-state magnetic and thermodynamic behaviour of a trilayered spin-1/2 Ising ferrimagnet with square monolayers, driven by external Gaussian random magnetic field with certain spatio-temporal variations. Such thin magnetic systems are interesting subjects for simulational studies as they exhibit compensation phenomenon. Here, two distinct theoretical atoms, A and B make up the ABA and AAB type of configurations. In ABA, A-atoms make up the surface layers and the mid-layer is composed up of B atoms. While, in AAB, A-atoms make up the top and midlayer while the bottom layer is made up of B-atoms. The like atoms (A-A and B-B) ferromagnetically interact and the unlike atoms (A-B) interact antiferromagnetically. For the time-dependent external Gaussian random field, the mean is zero always and the standard deviation is increased to unity in steps. Depending upon the strength of the external Gaussian random field, the compensation and critical points shift and steady-state magnetic behaviours shift between different distinct type of ferrimagnetic behaviours. The compensation phenomenon even vanishes after crossing a finite threshold of standard deviation of the magnetic field for particular choices of the other controlling parameters. Like Chandra S. [Phys. Rev. E 104, 064126 (2021)], in the Hamiltonian parameter space of both the configurations islands of ferrimagnetic phase without compensation appear within the phase area with compensation of field-free case. The areas of such islands grow with increasing standard deviation of the external field, σ, obeying the scaling relation: f (σ, A(σ)) = σ −b A(σ) with bABA = 1.913 ± 0.137 and bAAB = 1.625 ± 0.066 .

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“…The ground state phase diagram of this model is obtained in a longitudinal magnetic eld for a single ion potential [32]. Then applying Monte Carlo Simulation, in recent papers, the authors have paid attention to the study of thermodynamic properties and showing the effect of several physical parameters on several hysteresis loops [33][34][35][36][37][38].…”

Section: Introductionmentioning

confidence: 99%

Study of the Blume–Emery–Griffiths Model for Mixed Carbon-Like Nanotube: Monte Carlo Study

et al. 2022

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Monte Carlo study under the Metropolis algorithm is performed to investigate the ground phase diagrams and hysteresis electric cycles by using the Blume-Emery-Gri ths (BEG) model with the mixed spins (S-1, σ-3/2). Firstly, the ground state phase diagram has been established to show the more stable con gurations corresponding to physical parameter E Z /J C .Moreover, the hysteresis electric cycle behaviors have been investigated by varying temperature, exchange coupling interactions, crystal eld and biquadratic parameter of the carbon-like nanotube. It is found that the increase of the crystal eld and the biquadratic exchange parameters decreases the surface of the loops leading to the apparition of the polarization plateaus.

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Dilution effects on compensation temperature in nano-trilayer graphene structure: Monte Carlo study

Cited by 72 publications

References 35 publications

Compensation and its systematics in spin-1/2 Ising trilayered triangular ferrimagnet

Compensation and its systematics in spin-1/2 Ising trilayered triangular ferrimagnet

Effect of a Gaussian Random External Magnetic Field with Spatio-temporal Variation on Compensation in Ising Spin-1/2 Trilayered Square Ferrimagnets

Study of the Blume–Emery–Griffiths Model for Mixed Carbon-Like Nanotube: Monte Carlo Study

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