Phase-Field Simulation of Domain Structure Evolution in Ferroelectric Thin Films

2000 ◽  
Vol 652 ◽  
Author(s):  
Y. L. Li ◽  
S. Y. Hu ◽  
Z. K. Liu ◽  
L. Q. Chen
Keyword(s):  
Thin Films ◽  
Phase Transition ◽  
Domain Wall ◽  
Domain Structure ◽  
Phase Field ◽  
Field Model ◽  
Phase Field Model ◽  
Ferroelectric Thin Films ◽  
Structure Evolution ◽  
Field Simulation

ABSTRACTA phase-field model for predicting the domain structure evolution in constrained ferroelectric thin films is developed. It employs an analytical elastic solution derived for a constrained film with arbitrary eigenstrain distributions. In particular, the model is applied to the domain structure evolution during a cubic→tetragonal proper ferro- electric phase transition. The effect of substrate constraint on the volume fractions of domain variants, domain-wall orientations, and domain shapes is studied. It is shown that the predicted results agree very well with existing experimental observations in ferroelectric thin films.

Phase-Field Modeling of Domain Structure Energetics and Evolution in Ferroelectric Thin Films

2010 ◽  
Vol 77 (4) ◽  
Author(s):  
Antonios Kontsos ◽  
Chad M. Landis
Keyword(s):  
Thin Films ◽  
Domain Structure ◽  
Phase Field ◽  
Ferroelectric Thin Film ◽  
Ferroelectric Thin Films ◽  
Structure Evolution ◽  
Film Properties ◽  
Field Approach ◽  
Domain Structures ◽  
The Continuum

A computational model developed based on the phase-field approach is used to model domain structures in ferroelectric thin films and to quantify the effects of strain and applied electric field on the microstructural evolution, and on the induced dielectric, electrostrictive, and piezoelectric film properties. Theoretically predicted vortex-like polydomain and experimentally observed bidomain and monodomain film morphologies are modeled using the continuum phase-field approach. A nonlinear finite element method is used to solve the boundary value problems relevant to ferroelectric thin films. The computed results agree with the Kittel law for specific ranges of film strain. Simulations that track the domain structure evolution and compute ferroelectric thin film properties given the film dimensions and the imposed electromechanical boundary conditions are also reported.

scholarly journals Tunable thermal conductivity via domain structure engineering in ferroelectric thin films: A phase-field simulation

2016 ◽  
Vol 111 ◽  
pp. 220-231 ◽  
Author(s):  
Jian-Jun Wang ◽  
Yi Wang ◽  
Jon F. Ihlefeld ◽  
Patrick E. Hopkins ◽  
Long-Qing Chen
Keyword(s):  
Thin Films ◽  
Thermal Conductivity ◽  
Domain Structure ◽  
Phase Field ◽  
Ferroelectric Thin Films ◽  
Phase Field Simulation ◽  
Field Simulation ◽  
Structure Engineering

Phase-field model of domain structures in ferroelectric thin films

2001 ◽  
Vol 78 (24) ◽  
pp. 3878-3880 ◽  
Author(s):  
Y. L. Li ◽  
S. Y. Hu ◽  
Z. K. Liu ◽  
L. Q. Chen
Keyword(s):  
Thin Films ◽  
Phase Field ◽  
Field Model ◽  
Phase Field Model ◽  
Ferroelectric Thin Films ◽  
Domain Structures

scholarly journals Formation of polarization needle-like domain and its unusual switching in compositionally graded ferroelectric thin films: an improved phase field model

RSC Advances ◽  
2019 ◽  
Vol 9 (13) ◽  
pp. 7575-7586 ◽  
Author(s):  
Le Van Lich ◽  
Van-Hai Dinh
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Phase Field ◽  
Field Model ◽  
Phase Field Model ◽  
Ferroelectric Thin Film ◽  
Ferroelectric Thin Films ◽  
Switching Mechanism ◽  
New Phase

New phase field model to reveal switching mechanism of needle domain in compositionally graded ferroelectric thin film.

Phase-Field Simulation of Three-Dimensional Dendritic Growth

2010 ◽  
Vol 97-101 ◽  
pp. 3769-3772 ◽  
Author(s):  
Chang Sheng Zhu ◽  
Jun Wei Wang
Keyword(s):  
Computational Methods ◽  
Phase Field ◽  
Interfacial Energy ◽  
Dendritic Growth ◽  
Field Model ◽  
Three Dimensional ◽  
Phase Field Model ◽  
Computational Time ◽  
Field Simulation ◽  
Undercooled Melt

Based on a thin interface limit 3D phase-field model by coupled the anisotropy of interfacial energy and self-designed AADCR to improve on the computational methods for solving phase-field, 3D dendritic growth in pure undercooled melt is implemented successfully. The simulation authentically recreated the 3D dendritic morphological fromation, and receives the dendritic growth rule being consistent with crystallization mechanism. An example indicates that AADCR can decreased 70% computational time compared with not using algorithms for a 3D domain of size 300×300×300 grids, at the same time, the accelerated algorithms’ computed precision is higher and the redundancy is small, therefore, the accelerated method is really an effective method.

Phase-field modeling of the coupled domain structure and dielectric breakdown evolution in a ferroelectric single crystal

2019 ◽  
Vol 21 (29) ◽  
pp. 16207-16212 ◽  
Author(s):  
Ziming Cai ◽  
Chaoqiong Zhu ◽  
Xiaohui Wang ◽  
Longtu Li
Keyword(s):  
Single Crystal ◽  
Domain Structure ◽  
Phase Field ◽  
Field Model ◽  
Dielectric Breakdown ◽  
Phase Field Model ◽  
Phase Field Modeling ◽  
Field Modeling ◽  
Ferroelectric Single Crystal

The coupled evolution of domain structure and dielectric breakdown is simulated via a phase-field model.

The Simulation of Stress-Induced Phase Transition of L10 Re-Precipitation Based on Microscopic Phase-Field Model

2011 ◽  
Vol 689 ◽  
pp. 226-234
Author(s):  
Yong Xin Wang ◽  
Yong Biao Wang ◽  
Zheng Chen ◽  
Yan Li Lu
Keyword(s):  
Phase Transition ◽  
Induction Period ◽  
Phase Field ◽  
Field Model ◽  
Large Range ◽  
Phase Field Model ◽  
Precipitation Process ◽  
Phase Precipitation ◽  
Microscopic Phase Field Model ◽  
Precipitation Phase

It is common that the pre-precipitation phase with kinetics advantage is found during non-equilibrium transformation. The continuously changed stress in the transformation increases the complication of precipitation process. The stress induces Ll0pre-precipitation phase in Ni75-Al12.5-V12.5alloy is studied by microscope phase-field model in this paper. It is particularly show that Ll2phase precipitates directly without stress. There is no Ll0phase to be found in the disordered matrix. Oppositely, Ll0phase precipitates firstly with stress, and then it turns into Ll2phase. When stress is less, either or both above situations are observed. While stress is stronger, a large range of Ll0phase precipitates firstly. Then a part of it dissolves. The rest turns into Ll2phase. The precipitation of pre-precipitation phase accelerates the precipitation process. The larger the stress and the more Ll0phase precipitation, the longer it exists and the shorter the induction period is.

A phase field model for a solid–liquid phase transition

2011 ◽  
Vol 38 (7) ◽  
pp. 477-480 ◽  
Author(s):  
Michele Ciarletta ◽  
Mauro Fabrizio ◽  
Vincenzo Tibullo
Keyword(s):  
Phase Transition ◽  
Liquid Phase ◽  
Phase Field ◽  
Field Model ◽  
Phase Field Model ◽  
Liquid Phase Transition ◽  
Solid Liquid
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