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

被引：20
|
作者：
Nataf, Guillaume F. [1 ,2 ]
Guennou, Mael [1 ]
Haussmann, Alexander [3 ]
Barrett, Nick [2 ]
Kreisel, Jens [1 ,4 ]
机构：
[1] Luxembourg Inst Sci & Technol, Mat Res & Technol Dept, 41 Rue Brill, L-4422 Belvaux, Luxembourg
[2] CEA Saclay, DSM IRAMIS SPEC, Serv Phys Etat Condense, CNRS UMR 3680, F-91191 Gif Sur Yvette, France
[3] Tech Univ Dresden, Inst Angew Photophys, George Bahr Str 1, D-01069 Dresden, Germany
[4] Univ Luxembourg, Phys & Mat Sci Res Unit, 41 Rue Brill, L-4422 Belvaux, Luxembourg
来源：
PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS | 2016年 / 10卷 / 03期
关键词：
Raman spectroscopy; domain walls; lithium niobate; doping; magnesium; defects; single crystals; CONGRUENT LINBO3; X-RAY; INTRINSIC DEFECTS; LITHIUM TANTALATE; RAMAN; VISUALIZATION; DEPENDENCE; SCATTERING; MECHANISM; INVERSION;
D O I：
10.1002/pssr.201510303
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
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
引用
收藏
页码：222 / 226
页数：5
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