Magnetization and compensation behaviors in a mixed spins (7/2, 1) anti-ferrimagnetic ovalene nano-structure

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

doi:10.1016/j.spmi.2019.106224

Cited by 46 publications

(8 citation statements)

References 55 publications

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“…However, comparing the two figures, we can see that the coercivity and the hysteresis loop area are less responsive to d σ variation than to d S one. A similar result is obtained in antiferrimagnetic ovalene nano-structure 42 The temperature influence on the hysteresis behavior of the sublattices as well as the whole system are seen in Fig. 13.…”

supporting

confidence: 78%

“…The first two correspond to the compensation temperatures (t = 1.3 and 3.6) as in Ref. 42, while the third one (t = 6.5) is the blocking temperature (t B = T B /J σ ), at which the system undergoes a second order phase transition to the superparamagnetic phase. It is worth noting that t B is not a critical point in the sense that the system does switch from an ordered ((M ≠ 0.0)) to a disordered state (M = 0.0).…”

Section: Resultsmentioning

confidence: 98%

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Theoretical Study of the Magnetic Properties of a Ferrimagnetic Graphene-Like Nanoribbon: Monte Carlo Treatment

Boughazi

Kerouad

Kotri

2022

ECS J. Solid State Sci. Technol.

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Monte Carlo simulation was used to study the magnetic properties of the zigzag graphene-like nanoribbon predicated on the ferrimagnetic (5/2,3/2) combined Ising system. The magnetic and thermodynamic properties curves induced by varying exchange coupling interactions and ion anisotropies have all been well studied. For several physical parameters, phase diagrams were provided. Values of exchange couplings and single-ion anisotropy thresholds, indicating whether the system has two compensation temperature points, have been determined. In addition, the impacts of different Hamiltonian parameters on the behavior of multiple-loop hysteresis were explored.

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supporting

confidence: 78%

Section: Resultsmentioning

confidence: 98%

Theoretical Study of the Magnetic Properties of a Ferrimagnetic Graphene-Like Nanoribbon: Monte Carlo Treatment

Boughazi

Kerouad

Kotri

2022

ECS J. Solid State Sci. Technol.

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“…In [46], the dilution effects on compensation temperature in nanotrilayer graphene structure were studied through MC simulation and it has been found that with reduction in dilution probability, compensation temperature, increases in an ABA system and decreases in BAB systems. In [47], by the MC approach, the appearance of two compensation temperatures is reported in a mixed spin (7/2, 1) antiferromagnetic ovalene nanostructures. It was observed by MC simulation [48], in Blume Capel model of a bilayer graphene structure with Ruderman-Kittel-Kasuya-Yosida (RKKY) interactions, the transition temperature increases with decrease in the number of nonmagnetic layers.…”

Section: Introductionmentioning

confidence: 98%

Thermodynamic behaviour of magnetocaloric quantities in spin-1/2 Ising square trilayer

Chandra

2020

Preprint

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We have studied a spin-1/2, Ising trilayered ferrimagnetic system on square Bravais lattice, employing Monte-Carlo simulation with single spin-flip Metropolis algorithm. The bulk of such a system is formed by three layers, each of which is composed completely either by A or B type of atoms, resulting in two distinct compositions: ABA and AAB and two different types of magnetic interactions: ferromagnetic between like atoms and antiferromagnetic between unlike atoms. Variation of relative interaction strengths in the Hamiltonian, for a range of values, leads to the shift of compensation point and critical point and changes in the magnitude of reduced residual magnetisation. We have tried to put forward probable mathematical forms of dependences of the reduced residual magnetisation and temperature interval between the compensation and critical points on controlling parameters in absence of applied magnetic field and have obtained phase diagrams for both types of configurations from these relations.

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“…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. In Blume Capel model (S = 1) of a bilayer graphene structure with Ruderman-Kittel-Kasuya-Yosida (RKKY) interactions, it was observed by MC simulation, in [42], the transition temperature increases with decrease in the number of nonmagnetic layers.…”

Section: Introductionmentioning

confidence: 99%

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

Chandra

2020

Preprint

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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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Magnetization and compensation behaviors in a mixed spins (7/2, 1) anti-ferrimagnetic ovalene nano-structure

Cited by 46 publications

References 55 publications

Theoretical Study of the Magnetic Properties of a Ferrimagnetic Graphene-Like Nanoribbon: Monte Carlo Treatment

Theoretical Study of the Magnetic Properties of a Ferrimagnetic Graphene-Like Nanoribbon: Monte Carlo Treatment

Thermodynamic behaviour of magnetocaloric quantities in spin-1/2 Ising square trilayer

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

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