Monte Carlo simulation on domain pattern and ferroelectric behaviors of relaxor ferroelectrics

The domain configuration and ferroelectric property of mode relaxor ferroelectrics (RFEs) are investigated by performing a two-dimensional Monte Carlo simulation based on the Ginzburg-Landau theory on ferroelectric phase transitions and the defect model as an approach to the electric dipole configur...

Full description

Saved in:
Bibliographic Details
Published in:Journal of materials science 2006, Vol.41 (1), p.163-175
Main Authors: Liu, J.-M, Lau, S. T, Chan, H. L. W, Choy, C. L
Format: Article
Language:English
Subjects:
Algorithms
composite polymers
Computer simulation
Configurations
Copolymers
Crystal defects
Defects
Domain walls
Electric dipoles
Ferroelectric materials
Ferroelectricity
Ferroelectrics
hysteresis
Materials science
Mathematical models
microstructure
Monte Carlo method
Monte Carlo methods
Monte Carlo simulation
phase transition
Phase transitions
prediction
Proton irradiation
Relaxors
simulation
simulation models
temperature
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The domain configuration and ferroelectric property of mode relaxor ferroelectrics (RFEs) are investigated by performing a two-dimensional Monte Carlo simulation based on the Ginzburg-Landau theory on ferroelectric phase transitions and the defect model as an approach to the electric dipole configuration in relaxor ferroelectrics. The evolution of domain pattern and domain wall configuration with lattice defect concentration and temperature is simulated, predicting a typical two-phase coexisted microstructure consisting of ferroelectric regions embedded in the matrix of a paraelectric phase. The diffusive ferroelectric transitions in terms of the spontaneous polarization hysteresis and dielectric susceptibility as a function of temperature and defect concentration are successfully revealed by the simulation, demonstrating the applicability of the defect model and the simulation algorithm. A qualitative consistency between the simulated results and the properties of proton-irradiated ferroelectric copolymer is presented.
ISSN:0022-2461
1573-4803
DOI:10.1007/s10853-005-6016-3