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 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 simulation of domain structure for PbTiO3/SrTiO3 superlattices

2009 ◽  
Vol 57 (16) ◽  
pp. 4736-4744 ◽  
Author(s):  
D.C. Ma ◽  
Yue Zheng ◽  
C.H. Woo
Keyword(s):  
Domain Structure ◽  
Phase Field ◽  
Phase Field Simulation ◽  
Field Simulation

Phase-field simulation of thermal conductivity in porous polycrystalline microstructures

2008 ◽  
Vol 104 (3) ◽  
pp. 033512 ◽  
Author(s):  
Paul C. Millett ◽  
Dieter Wolf ◽  
Tapan Desai ◽  
Srujan Rokkam ◽  
Anter El-Azab
Keyword(s):  
Thermal Conductivity ◽  
Phase Field ◽  
Phase Field Simulation ◽  
Field Simulation ◽  
Porous Polycrystalline

Phase-field simulation of strain-induced domain switching in magnetic thin films

2011 ◽  
Vol 98 (11) ◽  
pp. 112505 ◽  
Author(s):  
Jia-Mian Hu ◽  
G. Sheng ◽  
J. X. Zhang ◽  
C. W. Nan ◽  
L. Q. Chen
Keyword(s):  
Thin Films ◽  
Phase Field ◽  
Domain Switching ◽  
Magnetic Thin Films ◽  
Phase Field Simulation ◽  
Field Simulation

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.

Three-dimensional phase field simulation of intragranular void formation and thermal conductivity in irradiated α-Fe

2018 ◽  
Vol 53 (15) ◽  
pp. 11002-11014 ◽  
Author(s):  
Yuanyuan Wang ◽  
Jianhua Ding ◽  
Yonggang Chen ◽  
Jijun Zhao ◽  
Yunzhi Wang
Keyword(s):  
Thermal Conductivity ◽  
Phase Field ◽  
Three Dimensional ◽  
Void Formation ◽  
Phase Field Simulation ◽  
Field Simulation
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