Nano scale domain control under polarization switching in ferroelectric lead meta niobate single crystal

2019 ◽  
Author(s):  
Ajay Yoel
Keyword(s):  
Single Crystal ◽  
Polarization Switching ◽  
Nano Scale

Evaluation of fracture strength of nano-scale SrTiO3 single crystal with sessile dislocation

2017 ◽  
Vol 2017 (0) ◽  
pp. OS1512
Author(s):  
Hiroki UNNO ◽  
Yuki MIZUNO ◽  
Takashi SUMIGAWA ◽  
Takayuki KITAMURA
Keyword(s):  
Single Crystal ◽  
Fracture Strength ◽  
Nano Scale

A Study on the Nanoindentation Behaviour of Single Crystal Silicon Using Hybrid MD-FE Method

2008 ◽  
Vol 32 ◽  
pp. 259-262 ◽  
Author(s):  
Akbar Afaghi Khatibi ◽  
Bohayra Mortazavi
Keyword(s):  
Molecular Dynamics ◽  
Finite Element ◽  
Single Crystal ◽  
Material Properties ◽  
Single Crystal Silicon ◽  
Dynamics Simulation ◽  
Fe Method ◽  
Crystal Silicon ◽  
Element Analysis ◽  
Nano Scale

Developing new techniques for the prediction of materials behaviors in nano-scales has been an attractive and challenging area for many researches. Molecular Dynamics (MD) is the popular method that is usually used to simulate the behavior of nano-scale material. Considering high computational costs of MD, however, has made this technique inapplicable as well as inflexible in various situations. To overcome these difficulties, alternative procedures are thought. Considering its capabilities, Finite Element Analysis (FEA) seems to be the most appropriate substitute for MD simulations in most cases. But since the material properties in nano, micro, and macro scales are different, therefore to use FEA methods in nano-scale modeling one must use material properties appropriate to that scale. To this end, a previously developed Hybrid Molecular Dynamics-Finite Element (HMDFE) approach was used to investigate the nanoindentation behavior of single crystal silicon with Berkovich indenter. In this study, a FEA model was developed based on the material properties extracted from molecular dynamics simulation of uniaxial tension test on single crystal Silicon. Eventually, by comparison of FEA results with experimental data, the validity of this new technique for the prediction of nanoindentation behavior of Silicon was concluded.

Single domain vs. polydomain [111] 0.72Pb(Mg1/3Nb2/3)O3-0.28PbTiO3 single crystal. Polarization switching, dielectric and pyroelectric properties

2012 ◽  
Vol 100 (24) ◽  
pp. 242905 ◽  
Author(s):  
Matthias Dietze ◽  
Hannelore Katzke ◽  
M. Es-Souni ◽  
Norbert Neumann ◽  
Hao-Su Luo
Keyword(s):  
Single Crystal ◽  
Polarization Switching ◽  
Single Domain ◽  
Pyroelectric Properties
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