scholarly journals Mechanical switching in ferroelectrics by shear stress and its implications on charged domain wall generation and vortex memory devices

RSC Advances ◽  
2018 ◽  
Vol 8 (8) ◽  
pp. 4434-4444 ◽  
Author(s):  
W. J. Chen ◽  
Shuai Yuan ◽  
L. L. Ma ◽  
Ye Ji ◽  
Biao Wang ◽  
...  
Keyword(s):  
Shear Stress ◽  
Domain Wall ◽  
Phase Field ◽  
Thermodynamic Calculation ◽  
Memory Devices ◽  
Phase Field Simulation ◽  
Field Simulation ◽  
Simple Mechanism

Combining thermodynamic calculation and phase-field simulation, we revealed that mechanical switching of polarization can be achieved in ferroelectric by shear stressviaa simple mechanism where the presence of flexoelectricity is not necessary.

Phase-field simulation of dose rate effect on the Cu precipitation with neutron irradiation

2021 ◽  
Vol 23 (7) ◽  
pp. 4217-4229
Author(s):  
Shahid Maqbool ◽  
Yongsheng Li ◽  
Suleman Muhammad ◽  
Zhengwei Yan ◽  
Shujing Shi
Keyword(s):  
Dose Rate ◽  
Neutron Irradiation ◽  
Phase Field ◽  
Volume Fraction ◽  
Rate Effect ◽  
Phase Field Simulation ◽  
Field Simulation ◽  
Cu Alloys ◽  
Dose Rate Effect

Radiation-enhanced precipitation (REP) in Fe–Cu alloys results in higher volume fraction and radius of Cu precipitates.

The ultrahigh discharge efficiency and energy density of P(VDF-HFP) via electrospinning-hot press with St-MMA copolymer

2021 ◽  
Author(s):  
Jian Wang ◽  
Yunchuan Xie ◽  
Yifei Zhang ◽  
Biyun Peng ◽  
Qizheng Li ◽  
...  
Keyword(s):  
Energy Density ◽  
Phase Field ◽  
Composite Films ◽  
Experimental Tests ◽  
Hot Press ◽  
Phase Field Simulation ◽  
Field Simulation ◽  
Discharge Efficiency

Flory–Huggins theory combined with experimental tests and phase-field simulation proves that electrospinning improves the homogeneity and Eb in composite films, and MS can limit the ferroelectric relaxation of PVDF and significantly increase Ue and η.

Phase-Field Simulation of Orowan Strengthening by Coherent Precipitate Plates in an Aluminum Alloy

2015 ◽  
Vol 46 (7) ◽  
pp. 3287-3301 ◽  
Author(s):  
Hong Liu ◽  
Yipeng Gao ◽  
Liang Qi ◽  
Yunzhi Wang ◽  
Jian-Feng Nie
Keyword(s):  
Aluminum Alloy ◽  
Phase Field ◽  
Phase Field Simulation ◽  
Field Simulation ◽  
Coherent Precipitate

scholarly journals Creating polar antivortex in PbTiO3/SrTiO3 superlattice

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Adeel Y. Abid ◽  
Yuanwei Sun ◽  
Xu Hou ◽  
Congbing Tan ◽  
Xiangli Zhong ◽  
...  
Keyword(s):  
Phase Transitions ◽  
Phase Field ◽  
Driving Force ◽  
Topological Phase ◽  
Phase Field Simulation ◽  
Topological Structures ◽  
Field Simulation ◽  
Condensed Matters ◽  
Topological Phase Transitions ◽  
Insight Into

AbstractNontrivial topological structures offer a rich playground in condensed matters and promise alternative device configurations for post-Moore electronics. While recently a number of polar topologies have been discovered in confined ferroelectric PbTiO3 within artificially engineered PbTiO3/SrTiO3 superlattices, little attention was paid to possible topological polar structures in SrTiO3. Here we successfully create previously unrealized polar antivortices within the SrTiO3 of PbTiO3/SrTiO3 superlattices, accomplished by carefully engineering their thicknesses guided by phase-field simulation. Field- and thermal-induced Kosterlitz–Thouless-like topological phase transitions have also been demonstrated, and it was discovered that the driving force for antivortex formation is electrostatic instead of elastic. This work completes an important missing link in polar topologies, expands the reaches of topological structures, and offers insight into searching and manipulating polar textures.

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