NDLI: Formation of self-assembled nanodomain structures in single crystals of uniaxial ferroelectrics lithium niobate, lithium tantalate and strontium–barium niobate

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Formation of self-assembled nanodomain structures in single crystals of uniaxial ferroelectrics lithium niobate, lithium tantalate and strontium–barium niobate

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Author	V. Ya. Shur V. A. Shikhova P. S. Zelenovskiy D. V. Pelegov L. I. Ivleva J. Dec
Abstract	The formation and evolution of the self-assembled nanodomain structures during polarization reversal have been comparatively analyzed in single crystals of various uniaxial ferroelectrics: LiNbO3 (LN), LiTaO3 (LT) and SrxBa1-xNb2O6 (SBN). Several experimental methods have been used for visualization of the micro- and nanodomain patterns. The static domain images have been obtained by optical microscopy and piezoresponse force microscopy. The Raman confocal microscopy allowed us to obtain the domain images in the bulk. The equilibrium slow switching with effective screening resulted in growth of polygon-shaped micro-domains: hexagons in LN, triangles in LT and squares in SBN, which corresponds to crystal symmetry. Switching in nonequilibrium conditions (noneffective screening of depolarization field) brings to appearance of similar nanodomain structures in all studied crystals as a result of different processes: (1) formation of nanodomain ensembles, (2) discrete switching, (3) incomplete merging and (4) spontaneous backswitching.
Related Links	http://www.worldscientific.com/doi/pdf/10.1142/S2010135X14500064
ISSN	2010135X
e-ISSN	20101368
DOI	10.1142/S2010135X14500064
Journal	Journal of Advanced Dielectrics
Issue Number	1
Volume Number	4
Language	English
Publisher	World Scientific Publishing
Publisher Place	Singapore
Access Restriction	Open
Subject Keyword	Electricity Nanodomain Structures Self-assembling Lithium Niobate Lithium Tantalate Strontium–barium Niobate
Content Type	Text
Resource Type	Article
Subject	Ceramics and Composites Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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