Formation of self-assembled micro- and nano-domain structures in uniaxial ferroelectrics / Shur V.Y., Shur A.G., Akhmatkhanov A.R. // IOP Conference Series: Materials Science and Engineering. - 2017. - V. 192, l. 1.

ISSN:

17578981

Type:

Conference Paper

Abstract:

We present the experimental study of appearance of domain wall shape instabilities and self-assembled domain structures in uniaxial ferroelectrics lithium niobate and lithium tantalate covered by artificial dielectric layer. The domain structure evolution has been considered as a manifestation of nucleation processes similar to the first order phase transformation. The necessary conditions for formation of self-assembled domain structures including the highly non-equilibrium switching conditions and stability of concave angles were proposed. The formation of the self-assembled domain shape instabilities under application of the uniform external electric field during switching (domain growth) and backswitching (domain shrinkage) has been studied experimentally with these conditions fulfilled. The formation of the bumps at the vortexes of hexagon domain for diameter above 3 - 5 μm with subsequent oriented growth was obtained in stoichiometric lithium tantalate. The formation of quasi-regular fish-bone domain structure has been revealed during spontaneous backswitching in Mg doped lithium niobate. The resulted structure consisted of the narrow residual domains with width from 200 to 500 nm appeared as a result of finger growth to the center of hexagon domain. The obtained decreasing of the number of the residual domains during growth has been attributed to strong electrostatic interaction of domain walls. © Published under licence by IOP Publishing Ltd.

Author keywords:

Index keywords:

Electric fields; Intermetallics; Lithium; Niobium compounds; Phase transitions; Artificial dielectric layers; External electric field; Lithium tantalate; Nucleation process; Self-assembled domains; Sh

DOI:

10.1088/1757-899X/192/1/012006

Смотреть в Scopus:

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85018409866&doi=10.1088%2f1757-899X%2f192%2f1%2f012006&partnerID=40&md5=0468da221bf080ab401e729f5b8fa775

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Другие поля

Поле	Значение
Art. No.	012006
Link	https://www.scopus.com/inward/record.uri?eid=2-s2.0-85018409866&doi=10.1088%2f1757-899X%2f192%2f1%2f012006&partnerID=40&md5=0468da221bf080ab401e729f5b8fa775
Affiliations	School of Natural Sciences and Mathematics, Ural Federal University, Ekaterinburg, Russian Federation
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Publisher	Institute of Physics Publishing
Conference name	International Conference on Structural and Phase Transformations in Materials: Theory, Computer Modelling and Experiment, SPTM 2017
Conference date	23 March 2017 through 27 March 2017
Conference code	127357
Language of Original Document	English
Abbreviated Source Title	IOP Conf. Ser. Mater. Sci. Eng.
Source	Scopus