Quantum Monte Carlo study of the electric properties of a ferroelectric superlattice

Feraoun, A.; Zaim, A.; Kerouad, M.

doi:10.1016/j.ssc.2016.09.012

Cited by 11 publications

(5 citation statements)

References 38 publications

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“…As far as we all know, the increase of T can magnify the disorder of the system and dominates the competition among the exchange interaction and the magnetic field, resulting in the diminution in the area of loops and the appearance of the paramagnetic phase of the system. Similar results are found in some other researches, such as the investigations about the ferroelectric or ferrielectric materials [23,44], BiFeO3/YMnO3 bilayer [39,40], BiFeO3/Co bilayer [41], and some magnetic materials [38,[55][56][57][58].…”

Section: Hysteresis Loopssupporting

confidence: 90%

“…We should mention that there are lots of works about the magnetic, dielectric, dynamic properties and hysteresis behaviors of the magnetic or electric low-dimensional nano-systems, which are constructed on various extended mixed-spin Ising systems [42][43][44]. Therefore, in the present work, we propose a mixed-spin (5/2, 2, 3/2) Ising model to study the dynamic properties of such a YMnO3/FM bilayer system, which is constructed on the honeycomb lattices in Fig.…”

Section: Model and Methodsmentioning

confidence: 99%

“…To name a few, by establishing the mixed spin (1/2, 1) core/shell structure, the dielectric properties of a nanowire, were examined in Ref. [23]. The dielectric properties of mixed spins (S = 5/2 and σ = 2) model, which is constructed for a nanotube structure were studied by Masrour et al [24] via MC simulation for several sizes.…”

Section: Introductionmentioning

confidence: 99%

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Insight into dynamic magnetic properties of YMnO3/FM bilayer in a time-dependent magnetic field

Chang

Wang

et al. 2021

Preprint

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Based on the Monte Carlo simulation, a mixed-spin (5/2, 2, 3/2) Ising model is constructed to investigate the dynamic magnetic properties of antiferromagnetic/ferromagnetic YMnO 3 /FM bilayer under the existence of a time-dependent magnetic field. The effects of exchange interaction, oscillating magnetic field as well as temperature are involved in this work. Masses of numerical results of the dynamic order parameter, susceptibility, internal energy, and blocking temperature are obtained with diverse physical parameters. Moreover, the phase diagrams and the hysteresis loops of the system are discussed in detail as well for a better understanding of the dynamic properties of the present system.

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Section: Hysteresis Loopssupporting

confidence: 90%

Section: Model and Methodsmentioning

confidence: 99%

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Insight into dynamic magnetic properties of YMnO3/FM bilayer in a time-dependent magnetic field

Chang

Wang

et al. 2021

Preprint

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“…Ванг и соавторы [16] исследовали ферромагнитную сверхрешетку из двух слоев с изинговскими спинами S =1/2 на первом слое и спинами S =1 на втором соответственно: они показали влияние обменной связи и толщины слоя на магнитные свойства системы с помощью MК-моделирования. В работе [17] были исследованы с помощью MК-моделирования фазовая диаграмма и магнитные свойства изинговских сегнетоэлектрических сверхрешеток с чередующимися слоями со спинами (1, 3 / 2). Следует отметить, что они также исследовали сверхрешетку только из двух сегнетоэлектрических слоев.…”

Section: Introductionunclassified

Magnetoelectric interaction at the interface in the superlattices of multiferroic: Monte Carlo study of the phase transitions

Yuldasheva

Nugaeva

2019

Lett. Mater.

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In this work, we study the phase transitions and surface properties of a multiferroic superlattice by Monte-Carlo simulation. The superlattice is formed by alternating magnetic and ferroelectric layers. We consider a multilayer film of a multiferroic consisting of L m z ferromagnetic layers and L f z ferroelectric layers sandwiched in the z-direction. Each xy plane has the dimension L × L. We consider the magnetic film as a film with a body-centered cubic lattice, the ferroelectric film as a film with a simple cubic lattice. For MC simulations, we use the Metropolis algorithm for a system with linear dimensions L × L × L z . We varied L in the range L = 40, 60, 80, 100 to determine size effects. In numerical simulations, the thickness of the superlattice was chosen with L z = 8, 16, 12, 24. The effect of temperature, external magnetic and electric fields, and the magnetoelectric coupling at the interface in the region of phase transitions was investigated. The phase diagram shows that the transition temperature increases with an increase in the magnetoelectric interaction parameter |J mf | on the interface. The secondorder phase transition in the superlattice occurs in the region of values from J mf = 0 to J mf = −3.3. When J mf = −2.5 and above, phase transitions occur at the same temperature. After J mf = −3.5 in both subsystems the first-order phase transition occurs. The transition temperatures, the magnetization of the layer, the polarization of the layer, the susceptibility, the internal energy, the magnetization and the polarization of the interface are determined. The dependences of the magnetization and polarization of surface layers on temperature are studied for various parameters of the magnetoelectric interaction and the values of external fields. The obtained results show that in the temperature dependence of energy and other physical quantities at low temperatures there are no regions of metastability.

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“…In Ref. 23 Note that MC methods based on the Metropolis algorithm, as well as other algorithms have proven to be successful in describing physical properties of magnetic systems of different spatial dimensions. They revealed particular features of the phase transitions in these systems 24 .…”

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confidence: 99%

Magneto-ferroelectric interaction in superlattices: Monte Carlo study of phase transitions

Sharafullin

Kharrasov

Diep

2019

Journal of Magnetism and Magnetic Materials

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line: magnetization of interface magnetic layers, green line: magnetization of interior magnetic layers, blue line: polarization of interface ferroelectric layers, purple line: polarization of interface ferroelectric layers ; (c) Susceptibilities versus T , with the same color code. J m = 1, J mf 1 = −0.15, J mf 2 = −0.135 corresponding to the GS with energy E 1 . B. Particular Case J mf 1 = J mf 2In this section we present the results of the MC simulations in the particular case where J mf 1 = J mf 2 . We will compare these results with results from the MF theory.Results for the temperature dependence of layer magnetizations, polarizations, and susceptibilities of the system are shown in Fig. 6 for J m = J f = 1, J mf = J mf 1 = J mf 2 = −0.15, −0.55. For J mf , these curves present a sharp second-order transitions at T m c 1.32 for magnetic layers and T f c 1.84 for ferroelectric layers.The results with an external magnetic field H z = 0.7 are shown in Fig. 7 for the order

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Quantum Monte Carlo study of the electric properties of a ferroelectric superlattice

Cited by 11 publications

References 38 publications

Insight into dynamic magnetic properties of YMnO3/FM bilayer in a time-dependent magnetic field

Insight into dynamic magnetic properties of YMnO3/FM bilayer in a time-dependent magnetic field

Magnetoelectric interaction at the interface in the superlattices of multiferroic: Monte Carlo study of the phase transitions

Magneto-ferroelectric interaction in superlattices: Monte Carlo study of phase transitions

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