Magnetic and thermodynamic behaviors of the graphene-like quantum dots: A Monte Carlo study

Sun, Lei; Wang, Wei; Lv, Dan; Gao, Zhong-yue; Li, Qi; Li, Bo-chen

doi:10.1016/j.jmmm.2021.167820

Cited by 29 publications

(5 citation statements)

References 68 publications

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“…It is figured out that as T increases, the area, coercivity and remanence of hysteresis loops decrease gradually until it gets to zero, suggesting that the hysteresis characteristic disappears and the system displays the paramagnetic behavior. Similar hysteresis behaviors have also been found in both theoretical investigations [40,[45][46][47][48][49][50][51][52][53] and experimental study of bilayer graphene nanoribbons [54].…”

Section: Hysteresis Loopssupporting

confidence: 83%

Thermodynamic and magnetocaloric properties of a triple-layer graphene-like structure

Sun¹,

Lv²,

Wang³

et al. 2021

Phys. Scr.

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Thermodynamic and magnetocaloric properties of the triple-layer graphene-like structure with mixed spin-3/2 and spin-5/2 have been reported by applying the Monte Carlo simulation. We found that for such system, various exchange couplings or external magnetic field affect greatly the magnetic behaviors and magnetocaloric effect. For example, the value of magnetization increases and the system becomes more stable with increasing the exchange couplings or external magnetic field. Besides, there exists a peak in each magnetic entropy change curve near the critical temperature. The value of it increases with decreasing exchange couplings or increasing the external magnetic field. In addition, when the exchange couplings decreases or the external magnetic field increases, the relative cooling power enhances. Finally, the hysteresis behaviors have also been investigated in detail.

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Section: Hysteresis Loopssupporting

confidence: 83%

Thermodynamic and magnetocaloric properties of a triple-layer graphene-like structure

Sun¹,

Lv²,

Wang³

et al. 2021

Phys. Scr.

Self Cite

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“…The area of hysteresis loops also becomes smaller with T increasing [44]. In addition, our results also agree well with those of the theoretical investigations of other low-dimensional structures [28,[45][46][47][48][49][50] and experimental research of graphene-CrI 3 films [41], graphene nanoribbons [51], and graphene monolayers [52].…”

Section: Specific Heat Internal Energysupporting

confidence: 90%

Compensation temperature and hysteresis behaviors of a graphene-like bilayer: Monte Carlo Study

Li¹,

Liu²,

Wang³

et al. 2023

Commun. Theor. Phys.

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Using Monte Carlo method, the compensation temperature and hysteresis loops of a ferrimagnetic mixed spin-3/2 and spin-5/2 Ising-type graphene-like bilayer are investigated induced by different physical parameters such as crystal field, exchange coupling, external magnetic field and temperature. The variation of magnetization, magnetic susceptibility, specific heat and the internal energy with the change of temperature are discussed. In addition, we also plotted the phase diagrams including transition temperature and compensation temperature. Finally, multiple hysteresis loops under the certain parameters are given.

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“…As this maximum value of the total magnetic susceptibility per site corresponds to the blocking temperature T B /|J system more difficult to produce. This result can be compared with those of other previously published works [54,62,71,72,[77][78][79][80][81][82][83][84] where similarities were observed.…”

Section: Resultssupporting

confidence: 72%

Mean-field study of magnetic properties and hysteresis behavior in a bilayer graphene Ising system

Salama,

Mouhrach,

Choubabi

et al. 2024

Phys. Scr.

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Using the mean-field approximation based on the Gibbs-Bogoliubov inequality for the free energy, we conducted an investigation into the magnetic properties and hysteresis behavior of a graphene Ising bilayer, where the top and bottom layers are occupied by spins σ = 3/2 and S = 5/2, respectively. The effects of exchange interactions, crystal fields, external magnetic field and temperature on thetotal magnetization, partial magnetizations of each layer, total magnetic susceptibility, blocking temperature and hysteresis loops of the system were thoroughly analyzed. The variations of the blocking temperature as a function of various parameters in the system's Hamiltonian were presented. Furthermore, we demonstrated the existence of multiple hysteresis loop behaviors under specificphysical conditions.

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Magnetic and thermodynamic behaviors of the graphene-like quantum dots: A Monte Carlo study

Cited by 29 publications

References 68 publications

Thermodynamic and magnetocaloric properties of a triple-layer graphene-like structure

Thermodynamic and magnetocaloric properties of a triple-layer graphene-like structure

Compensation temperature and hysteresis behaviors of a graphene-like bilayer: Monte Carlo Study

Mean-field study of magnetic properties and hysteresis behavior in a bilayer graphene Ising system

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