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Shapes of isolated domains and field induced evolution of regular and random 2D domain structures in LiNbO3 and LiTaO3

Shapes of isolated domains and field induced evolution of regular and random 2D domain structures in LiNbO3 and LiTaO3
Shapes of isolated domains and field induced evolution of regular and random 2D domain structures in LiNbO3 and LiTaO3
The whole variety of the shapes of isolated domains revealed in congruent and stoichiometric LiTaO3 and LiNbO3 by chemical etching and visualized by optical and scanning probe microscopy, was obtained by computer simulation. The shape evolution during growth was simulated by means of slightly modified Boolean automaton on a triangular cell. The kinetic nature of the shape of individual domains is clearly demonstrated.

The kinetics of domain structure evolution with the dominance of the growth of the steps formed at the domain walls as a result of domain merging was investigated experimentally in slightly distorted artificial regular two-dimensional (2D) domain structure and random natural one. The artificial model structure has been realized in congruent LiNbO3 with 2D electrode pattern produced by photolithography. Moreover the polarization reversal in congruent LiTaO3 was investigated as an example of natural domain growth limited by merging in random cell with possibility to control the initial density of individual domains by electric field. The domain images have been in situ visualized using polarizing optical microscope. The field induced evolution of the domain structure defined by domain merging was investigated in detail by computer simulation as a genuine percolation problem. The crucial dependence of the switching parameters on the nuclei concentration has been revealed.

The research was made possible in part by INTAS: Grant 03-51-6562; by Grant 04-02-16770, and by Ministry of Education RF ...06.01.028 of Program "Basic Research in Russian Universities"; and by Award No.EK-005-X1.
Shur, V.
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Chernykh, A.P.
93da19dd-cd03-48c7-877f-4e57b63db1c6
Nikolaeva, E.V.
983e2b96-b1fd-41c3-9324-3a7b09702ecf
Shishkin, E.I.
302530ce-0a36-4926-bbab-16c7191937c0
Shur, A.G.
3d1f7dc9-9a9c-4f93-93b7-5b0cc0bf533b
Terabe, K.
2a598a96-371f-441e-8b12-36377bbfd05f
Kurimura, S.
e48426bd-5c91-4b8e-9197-a53d8d13671e
Kitamura, K.
83aa6905-674d-409e-b0d2-067ca1db0fed
Gallo, K.
d08fbf8e-a4f8-4c15-b485-3d4f731b8d27
Shur, V.
1e10b499-44dc-4dbc-86d5-a2ba64c4bbe0
Chernykh, A.P.
93da19dd-cd03-48c7-877f-4e57b63db1c6
Nikolaeva, E.V.
983e2b96-b1fd-41c3-9324-3a7b09702ecf
Shishkin, E.I.
302530ce-0a36-4926-bbab-16c7191937c0
Shur, A.G.
3d1f7dc9-9a9c-4f93-93b7-5b0cc0bf533b
Terabe, K.
2a598a96-371f-441e-8b12-36377bbfd05f
Kurimura, S.
e48426bd-5c91-4b8e-9197-a53d8d13671e
Kitamura, K.
83aa6905-674d-409e-b0d2-067ca1db0fed
Gallo, K.
d08fbf8e-a4f8-4c15-b485-3d4f731b8d27

Shur, V., Chernykh, A.P., Nikolaeva, E.V., Shishkin, E.I., Shur, A.G., Terabe, K., Kurimura, S., Kitamura, K. and Gallo, K. (2005) Shapes of isolated domains and field induced evolution of regular and random 2D domain structures in LiNbO3 and LiTaO3. 8th International Symposium on Ferroic Domains and Micro-to Nanoscopic Structures. 24 - 27 Aug 2005.

Record type: Conference or Workshop Item (Paper)

Abstract

The whole variety of the shapes of isolated domains revealed in congruent and stoichiometric LiTaO3 and LiNbO3 by chemical etching and visualized by optical and scanning probe microscopy, was obtained by computer simulation. The shape evolution during growth was simulated by means of slightly modified Boolean automaton on a triangular cell. The kinetic nature of the shape of individual domains is clearly demonstrated.

The kinetics of domain structure evolution with the dominance of the growth of the steps formed at the domain walls as a result of domain merging was investigated experimentally in slightly distorted artificial regular two-dimensional (2D) domain structure and random natural one. The artificial model structure has been realized in congruent LiNbO3 with 2D electrode pattern produced by photolithography. Moreover the polarization reversal in congruent LiTaO3 was investigated as an example of natural domain growth limited by merging in random cell with possibility to control the initial density of individual domains by electric field. The domain images have been in situ visualized using polarizing optical microscope. The field induced evolution of the domain structure defined by domain merging was investigated in detail by computer simulation as a genuine percolation problem. The crucial dependence of the switching parameters on the nuclei concentration has been revealed.

The research was made possible in part by INTAS: Grant 03-51-6562; by Grant 04-02-16770, and by Ministry of Education RF ...06.01.028 of Program "Basic Research in Russian Universities"; and by Award No.EK-005-X1.

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More information

e-pub ahead of print date: 2005
Venue - Dates: 8th International Symposium on Ferroic Domains and Micro-to Nanoscopic Structures, 2005-08-24 - 2005-08-27

Identifiers

Local EPrints ID: 42409
URI: https://eprints.soton.ac.uk/id/eprint/42409
PURE UUID: f7620cd2-d10e-4220-93fa-da0b2cff6bba

Catalogue record

Date deposited: 12 Dec 2006
Last modified: 26 Feb 2019 17:30

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