Publication
Title
Engineering properties by long range symmetry propagation initiated at perovskite heterostructure interface
Author
Abstract
In epitaxial thin film systems, the crystal structure and its symmetry deviate from the bulk counterpart due to various mechanisms such as epitaxial strain and interfacial structural coupling, which induce an accompanying change in their properties. In perovskite materials, the crystal symmetry can be described by rotations of 6-fold coordinated transition metal oxygen octahedra, which are found to be altered at interfaces. Here, we unravel how the local oxygen octahedral coupling (OOC) at perovskite heterostructural interfaces initiates a different symmetry in epitaxial films and provide design rules to induce various symmetries in thin films by careful selecting appropriate combinations of substrate/buffer/film. Very interestingly we discovered that these combinations lead to symmetry changes throughout the full thickness of the film. Our results provide a deep insight into understanding the origin of induced crystal symmetry in a perovskite heterostructure and an intelligent route to achieve unique functional properties.
Language
English
Source (journal)
Advanced functional materials. - Weinheim
Publication
Weinheim : 2016
ISSN
1616-301X
Volume/pages
(2016), p. 1-25
Full text (open access)
The author-created version that incorporates referee comments and is the accepted for publication version Available from 26.08.2017
UAntwerpen
Faculty/Department
Research group
Publication type
Subject
Affiliation
Publications with a UAntwerp address
External links
Record
Identification
Creation 26.08.2016
Last edited 27.08.2016
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