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Ferroelectrics Volume 462, 2014 - Issue 1: Proceedings of the Thirteenth International Meeting on Ferroelectricity (IMF-13)
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Section B: CHARACTERIZATION OF SINGLE CRYSTALS

The Cation Sublattice Ordering in the Ferroelectric LiNbO3:Zn Single Crystals

M. N. PalatnikovInstitute of Chemistry, Kola Science Centre RAS, Apatity, Murmansk Region, RussiaCorrespondence[email protected]
,
N. V. SidorovInstitute of Chemistry, Kola Science Centre RAS, Apatity, Murmansk Region, Russia
,
A. A. YanichevInstitute of Chemistry, Kola Science Centre RAS, Apatity, Murmansk Region, Russia
,
A. A. GabainInstitute of Chemistry, Kola Science Centre RAS, Apatity, Murmansk Region, Russia
,
A. A. KrukInstitute of Chemistry, Kola Science Centre RAS, Apatity, Murmansk Region, Russia
,
K. Ya. BormanisInstitute of Solid State Physics, University of Latvia, Riga, Latvia
&
V. Ya. ShurFerroelectric Laboratory, Institute of Natural Sciences, Ural Federal University, Ekaterinburg, Russia
 show all
Pages 80-86 | Received 02 Sep 2013, Accepted 31 Oct 2013, Published online: 29 Apr 2014
 
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Abstract

It has been revealed for the first time by Raman spectroscopy that in LiNbO3:Zn crystal with Zn2+ concentration range 0.03–0.94 mol.% the ordering of the main doping cations and vacant octahedrons along the polar axis is better than in the undoped crystal of congruent composition. Thus, the configuration of oxygen octahedrons is closer to ideal. The line widths of the Raman spectra in this concentration range are narrower than in congruent LiNbO3 crystals and closer to the line width in stoichiometric crystals with the best known cation ordering. As far as Zn2+ concentration is small, the growth technique changes very slightly compared to the growth of the pure LiNbO3 crystals.

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