Formation of V-grooves in SrRuO3 epitaxial film

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Title: Formation of V-grooves in SrRuO3 epitaxial film
Authors: Liu, G
Feng, H
Liu, B
Wang, Y
Liu, W
Zou, B
Alford, NM
Petrov, PK
Item Type: Journal Article
Abstract: SrRuO3 thin films were epitaxially grown on a (001) SrTiO3 substrate using pulsed laser deposition technique. Various defects such as V-grooves, threading dislocations and dislocation dipoles are observed in the SrRuO3 epitaxial film. It is found that the sidewalls of most V-grooves are {101} facets, and the dominant angle between the sidewalls is 90°. Some threading dislocations end at the apexes of the V-grooves while the others penetrate the entire film. The threading dislocations and V-grooves can partially relieve the strain in the epitaxial SrRuO3 film. During the relaxation process, a two-dimensional growth mode transforms into a three-dimensional one, along with the formation of mesa-like islands separated by V-grooves. The dimensions and distributions of V-grooves are associated with the growth conditions. The control of growth mechanism and surface morphology are very important for the fabrication of novel perovskite oxide devices.
Issue Date: 19-Sep-2016
Date of Acceptance: 17-Sep-2016
URI: http://hdl.handle.net/10044/1/51998
DOI: https://dx.doi.org/10.1016/j.jcrysgro.2016.09.035
ISSN: 0022-0248
Publisher: Elsevier
Start Page: 13
End Page: 18
Journal / Book Title: Journal of Crystal Growth
Volume: 455
Copyright Statement: © 2016, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/
Keywords: Science & Technology
Physical Sciences
Technology
Crystallography
Materials Science, Multidisciplinary
Physics, Applied
Materials Science
Physics
Surface structure
Line defects
Transmission electron microscopy
Growth models
Perovskites
SrRuO3 epitaxial films
ELASTIC LATTICE MODEL
THIN-FILMS
001 SRTIO3
GROWTH
MICROSTRUCTURE
SURFACE
DISLOCATIONS
TRANSITION
STABILITY
0303 Macromolecular And Materials Chemistry
0306 Physical Chemistry (Incl. Structural)
Applied Physics
Publication Status: Published
Appears in Collections:Faculty of Engineering
Materials
Faculty of Natural Sciences



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