LiNbO3 waveguide SHG device with ferroelectric-domain-inverted grating formed by electron-beam scanning

1992 ◽  
Vol 28 (8) ◽  
pp. 721 ◽  
Author(s):  
M. Fujimura ◽  
T. Suhara ◽  
H. Nishihara
Keyword(s):  
Electron Beam ◽  
Ferroelectric Domain ◽  
Beam Scanning

scholarly journals The Ferroelectric Domain Structures Induced by Electron Beam Scanning in Lithium Niobate

Scanning ◽  
2018 ◽  
Vol 2018 ◽  
pp. 1-6 ◽  
Author(s):  
Evgeny Vlasov ◽  
Dmitry Chezganov ◽  
Maria Chuvakova ◽  
Vladimir Ya. Shur
Keyword(s):  
Electron Beam ◽  
Lithium Niobate ◽  
Charge Density ◽  
Domain Structure ◽  
Ferroelectric Domain ◽  
Structure Evolution ◽  
Stripe Domain ◽  
Beam Scanning ◽  
Domain Structures ◽  
First Order Phase Transition

Ferroelectric domain structure has been formed under the action of electron beam scanning in congruent lithium niobate single crystal covered by surface dielectric layer. The obtained types of the domain patterns have been considered as subsequent stages of domain structure evolution. The dependence on irradiated charge density of domain density, length, and period of domain rays and stripe domain width was used for characterization of the domain structure evolution. The threshold irradiated charge density necessary for the formation of solid stripe domain has been revealed. All obtained results have been discussed in terms of kinetic approach based on the analogy between domain structure evolution and first-order phase transition.

Microstructural development of electron beam processed Al-3Ti-1Sc alloy under different electron beam scanning speeds

2018 ◽  
Vol 143 ◽  
pp. 43-49 ◽  
Author(s):  
P. Yu ◽  
M. Yan ◽  
D. Tomus ◽  
C.A. Brice ◽  
C.J. Bettles ◽  
...  
Keyword(s):  
Electron Beam ◽  
Microstructural Development ◽  
Beam Scanning

scholarly journals Two-dimensional structures of ferroelectric domain inversion in LiNbO3 by direct electron beam lithography

2003 ◽  
Vol 93 (12) ◽  
pp. 9943-9946 ◽  
Author(s):  
J. He ◽  
S. H. Tang ◽  
Y. Q. Qin ◽  
P. Dong ◽  
H. Z. Zhang ◽  
...  
Keyword(s):  
Electron Beam ◽  
Electron Beam Lithography ◽  
Ferroelectric Domain ◽  
Two Dimensional ◽  
Domain Inversion

In situ observation of the motion of ferroelectric domain walls in Bi4Ti3O12 single crystals

2016 ◽  
Vol 49 (5) ◽  
pp. 1645-1652 ◽  
Author(s):  
Wanneng Ye ◽  
Lingli Tang ◽  
Chaojing Lu ◽  
Huabing Li ◽  
Yichun Zhou
Keyword(s):  
Electron Beam ◽  
Electron Microscope ◽  
Single Crystals ◽  
Transmission Electron Microscope ◽  
Domain Walls ◽  
Domain Switching ◽  
Ferroelectric Domain ◽  
In Situ Observation ◽  
Transmission Electron

Five types of ferroelectric domain walls (DWs) are present in Bi4Ti3O12 single crystals (Ye et al., 2015). Here their motion was investigated in situ using transmission electron microscopy and optical microscopy. The motion of P (a)-90° DWs, P (a)-180° DWs and P (c)-180° DWs was observed through electron beam poling in a transmission electron microscope. The growth of new P s(a)-180° nanodomains was frequently seen and they tended to nucleate at preexisting P s(a)-90° DWs. Irregularly curved P (c)-180° DWs exhibit the highest mobility, while migration over a short range occurs occasionally for faceted P s(a)-90° DWs. In addition, the motion of P s(a)-90° DWs and the growth/annihilation of new needle-like P s(a)-90° domains in a 20 µm-thick crystal were observed under an external electric field on an optical microscope. Most of the new needle-like P s(a)-90° domains nucleate at preexisting P s(a)-90° DWs and the former are much smaller than the latter. This is very similar to the situation for P s(a)-180° domain switching induced by electron beam poling in a transmission electron microscope. Our observations suggest the energy hierarchy for different domains of P s(c)-180° ≤ P s(a)-180° ≤ P s(a)-90° ≤ new needle-like P s(a)-90° in ferroelectric Bi4Ti3O12.

Laser and electron beam scanning of GaAs FETS

1982 ◽  
Vol 22 (4) ◽  
pp. 735-746 ◽  
Author(s):  
W.D. Edwards ◽  
R.F. Haythornthwaite
Keyword(s):  
Electron Beam ◽  
Beam Scanning
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