Evolution of defect signatures at ferroelectric domain walls in Mg-doped LiNbO3

Reference : Evolution of defect signatures at ferroelectric domain walls in Mg-doped LiNbO3


	Document type :	Scientific journals : Article
	Discipline(s) :	Physical, chemical, mathematical & earth Sciences : Physics
	Focus Areas :	Physics and Materials Science
	To cite this reference:	http://hdl.handle.net/10993/40055

Title :	Evolution of defect signatures at ferroelectric domain walls in Mg-doped LiNbO3
Language :	English
Author, co-author :	Nataf, Guillaume F. [> >]
	Guennou, Mael [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit]
	Haussmann, Alexander [> >]
	Barrett, Nick [> >]
	Kreisel, Jens [University of Luxembourg > Rectorate >]
Publication date :	2016
Journal title :	Physica Status Solidi. Rapid Research Letters
Volume :	10
Issue/season :	3
Pages :	222-226
Peer reviewed :	Yes (verified by ORBi^lu)
Audience :	International
ISSN :	1862-6254
Abstract :	[en] The domain structure of uniaxial ferroelectric lithium niobate single crystals is investigated using Raman spectroscopy mapping. The influence of doping with magnesium and poling at room temperature is studied by analysing frequency shifts at domain walls and their variations with dopant concentration and annealing conditions. It is shown that defects are stabilized at domain walls and that changes in the defect structures with Mg concentration can be probed by the shift of Raman modes. We show that the signatures of polar defects in the bulk and at the domain walls differ. (C) 2016 WILEY-VCH Verlag GmbH Co. KGaA, Weinheim
Permalink :	http://hdl.handle.net/10993/40055
DOI :	10.1002/pssr.201510303

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