Prediction of Magnetoelectric properties of defect BiFeO3 thin films using Monte Carlo simulations

2021 ◽  
pp. 168402
Author(s):  
M. Ait Tamerd ◽  
B. Abraime ◽  
A. Kadiri ◽  
A. Lahmar ◽  
M. El Marssi ◽  
...  
Keyword(s):  
Thin Films ◽  
Monte Carlo ◽  
Monte Carlo Simulations ◽  
Magnetoelectric Properties ◽  
Bifeo3 Thin Films

Domain Analysis and Magnetic Relaxation in Thin Films

1998 ◽  
Vol 09 (06) ◽  
pp. 821-825 ◽  
Author(s):  
Tatiana G. Rappoport ◽  
F. S. de Menezes ◽  
L. C. Sampaio ◽  
M. P. Albuquerque ◽  
F. Mello
Keyword(s):  
Magnetic Field ◽  
Thin Films ◽  
Monte Carlo ◽  
Ising Model ◽  
Monte Carlo Simulations ◽  
Magnetic Relaxation ◽  
Film Plane ◽  
Relative Strength ◽  
Two Dimensional ◽  
Magnetic Domains

We have simulated the magnetic relaxation (M(t)) and the nucleation of magnetic domains in the presence of magnetic field in thin films with anisotropy perpendicular to the film plane. We have used Monte Carlo simulations based on the two-dimensional classical Ising model including the long-range dipole–dipole and Zeeman interactions. Domains nucleated during the magnetic relaxation exhibit very rough interfaces. We analyze the roughness and the M(t) as a function of the relative strength of dipole–dipole and Zeeman terms.

scholarly journals Holographic grating inscription in DR1: DNA-CTMA thin films: the puzzle of time scales

2014 ◽  
Vol 12 (8) ◽  
pp. 886-892 ◽  
Author(s):  
Grzegorz Pawlik ◽  
Wojciech Radosz ◽  
Antoni Mitus ◽  
Jaroslaw Mysliwiec ◽  
Andrzej Miniewicz ◽  
...  
Keyword(s):  
Thin Films ◽  
Monte Carlo ◽  
Monte Carlo Simulations ◽  
Temporal Pattern ◽  
Initial Phase ◽  
Complex Dynamics ◽  
Time Interval ◽  
Wave Mixing ◽  
Fitting Procedures ◽  
Two Wave Mixing

AbstractWe study experimentally the dynamics of holographic inscription of gratings in DR1:DNA-CTMA thin films using a degenerate two-wave mixing (DTWM) setup in its initial phase (30 ms) and in a longer time interval (30 s). The temporal pattern of evolution of diffraction efficiency is complex, simple fitting procedures fail to reproduce the data. We point out that the complex dynamics can originate a large span of temporal scales, closely related to the microscale inhomogeneity of local free volume. Some of its hallmarks are found through Monte Carlo simulations.

Magnetoelectric properties of Mn-substituted BiFeO3 thin films with a TiO2 barrier

2011 ◽  
Vol 406 (23) ◽  
pp. 4400-4403 ◽  
Author(s):  
Jian-Jun Gu ◽  
Guo-Liang Zhao ◽  
Fu-Wei Cheng ◽  
Jin-Rong Han ◽  
Li-Hu Liu ◽  
...  
Keyword(s):  
Thin Films ◽  
Magnetoelectric Properties ◽  
Bifeo3 Thin Films

Surface and size effects on the Ferroelectric Phase Transition and Surface Polarization of Thin Films: Monte Carlo Simulations

1997 ◽  
Vol 493 ◽  
Author(s):  
J. Romero ◽  
L. F. Fonseca
Keyword(s):  
Thin Films ◽  
Phase Transition ◽  
Monte Carlo ◽  
Monte Carlo Simulations ◽  
Ferroelectric Phase Transition ◽  
Ferroelectric Phase ◽  
First Order ◽  
Surface Polarization ◽  
Ferroelectric Phase Transition Temperature ◽  
Model Hamiltonian

ABSTRACTThe macroscopic polarization of ferroelectric thin films was studied by Monte Carlo simulations using a Transverse Ising Model Hamiltonian with four-spins interactions. The dependence of the ferroelectric phase transition temperature, Tc, on the thickness of the film was obtained resulting in a shifting of Tc towards lower temperatures and a change from first-order to second-order phase transition as the thickness of the film is reduced. Comparison between the surface and internal order was carried out by the calculation of layer-averaged polarizations as a function of the sample temperature and the surface interaction parameters. These comparisons show that increasing disorder at the surface can be reverted by increasing the four-spins surface interactions.

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