[en] The symmetry of boundaries between ferroelectric, ferroelastic, and antiphase domains is a key element for
a theoretical understanding of their properties. Here, we derive this symmetry from their organic relation to the
symmetry of the primary transition order parameters. The domain wall symmetries are shown to coincide with
directions of the order-parameter n-dimensional vector space, corresponding to sum of the vectors associated with
adjacent domain states. This property is illustrated by the determination of the maximal symmetries of domain
walls in BaTiO3, LaAlO3, SrTiO3, and Gd2(MoO4)3. Besides, the domain pattern in YMnO3 is interpreted
as resulting from an annihilation-creation process, the annihilation of the antiphase domain walls creating six
ferroelectric domain walls merging at a single point.
Disciplines :
Physics
Author, co-author :
Toledano, Pierre; Université de Picardie, Amiens, France > Laboratoire des Systemes Complexes
Guennou, Mael; CRP Gabriel Lippmann, Belvaux, Luxembourg > Departement Science et Analyse des Materiaux
KREISEL, Jens ; University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit ; CRP Gabriel Lippmann, Belvaux, Luxembourg > Departement Science et Analyse des Materiaux
External co-authors :
yes
Language :
English
Title :
Order-parameter symmetries of domain walls in ferroelectrics and ferroelastics
Publication date :
2014
Journal title :
Physical Review. B
ISSN :
1098-0121
Volume :
89
Issue :
13
Peer reviewed :
Peer reviewed
Commentary :
Times Cited: 2 Kreisel, Jens/E-1939-2011 2
Journal Article
