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.

Phase Field Modeling for Grain Growth of Static Recrystallization of Deformed Alloys

2011 ◽  
Vol 399-401 ◽  
pp. 1785-1788
Author(s):  
Ying Jun Gao ◽  
Zhi Rong Luo
Keyword(s):  
Grain Growth ◽  
Phase Field ◽  
Field Model ◽  
Static Recrystallization ◽  
Phase Field Model ◽  
Free Energy Function ◽  
Phase Field Modeling ◽  
Field Modeling ◽  
Storage Energy ◽  
Good Agreement

A multi-state free energy function for deformation alloy with storage energy is proposed to simulate the microstructure evolution of static recrystallization with phase field model. The grain growth and grain size distribution during recrystallization are discussed. The simulation results are in good agreement with other theoretical or experimental results.

DESIGN OPTIMIZATION OF A FERROELECTRIC NANO-ACTUATOR USING PHASE-FIELD MODELING

2014 ◽  
Vol 1674 ◽  
Author(s):  
Ananya Renuka Balakrishna ◽  
John E. Huber
Keyword(s):  
Phase Field ◽  
Field Model ◽  
Phase Field Model ◽  
Two Dimensional ◽  
Phase Field Modeling ◽  
Ferroelectric Crystal ◽  
Surface Conditions ◽  
Field Modeling ◽  
Working Principle ◽  
Ferroelectric Switching

ABSTRACTA ferroelectric crystal with charge-free surface conditions contains polarized domains which can form a flux closure with zero net polarization. In the presence of an external electric field, the flux closure in a two-dimensional continuum reorients its spontaneous polarization to align with the field. Based on this concept of ferroelectric switching coupled with mechanical straining, we demonstrate the working principle of a ferroelectric nano-actuator. The behavior of the actuator is explored under the action of electro-mechanical loading and its mechanism is simulated with a 2D phase-field model. The design of nano-actuator is modified to achieve greater actuation displacements by bending a thin device.

Phase-Field Modeling of Domain Structure of Confined Nanoferroelectrics

2008 ◽  
Vol 100 (8) ◽  
Author(s):  
Julia Slutsker ◽  
Andrei Artemev ◽  
Alexander Roytburd
Keyword(s):  
Domain Structure ◽  
Phase Field ◽  
Phase Field Modeling ◽  
Field Modeling

scholarly journals Lattice Phase Field Model for Nanomaterials

Materials ◽  
2021 ◽  
Vol 14 (23) ◽  
pp. 7317
Author(s):  
Pingping Wu ◽  
Yongfeng Liang
Keyword(s):  
Phase Field ◽  
Field Model ◽  
Phase Field Model ◽  
Lattice Parameter ◽  
Grid Spacing ◽  
Field Equations ◽  
Future Directions ◽  
Superlattice Structure ◽  
Field Modeling ◽  
Phase Field Equations

The lattice phase field model is developed to simulate microstructures of nanoscale materials. The grid spacing in simulation is rescaled and restricted to the lattice parameter of real materials. Two possible approaches are used to solve the phase field equations at the length scale of lattice parameter. Examples for lattice phase field modeling of complex nanostructures are presented to demonstrate the potential and capability of this model, including ferroelectric superlattice structure, ferromagnetic composites, and the grain growth process under stress. Advantages, disadvantages, and future directions with this phase field model are discussed briefly.

Simulated rhythmic growth of targeted single crystal by polymer phase-field model

2013 ◽  
Vol 68 ◽  
pp. 23-26 ◽  
Author(s):  
D. Wang ◽  
Z.K. Jin ◽  
Y. Xing ◽  
H. Gao ◽  
X.K. Wang
Keyword(s):  
Single Crystal ◽  
Phase Field ◽  
Field Model ◽  
Phase Field Model ◽  
Polymer Phase ◽  
Rhythmic Growth
Sign in / Sign up

Export Citation Format

Share Document