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Title: Post-deposition control of ferroelastic stripe domains and internal electric field by thermal treatment

The dependence of the formation of ferroelastic stripe domain patterns on the thermal history is investigated by detailed piezoresponse force microscopy and X-ray diffraction experiments after and during annealing of tensile strained tetragonal Pb(Ti,Zr)O{sub 3} epitaxial thin films on DyScO{sub 3} substrates. In particular, the ferroelastic pattern is reversibly interchanged between a cross-hatched and a stripe domain pattern if the films are cooled at different rates after annealing above the formation temperature of a-domains. Different types of 180° and non-180° patterns can be created, depending on the thermal treatment. The changes in the 180° domain structure and lattice parameters are attributed to a change of oxygen vacancy concentration, which results in a modification of the internal electric field and unit cell size, causing also a shift of T{sub C}. Thermal treatment is done on rhombohedral La:BiFeO{sub 3} thin films as well. It is observed that also in these films, appropriate heat treatment modifies the domain pattern and films with a stripe domain pattern can be created, confirming the general validity of the developed model.
Authors:
; ; ;  [1] ;  [2] ;  [3] ;  [4]
  1. Ceramics Laboratory, EPFL-Swiss Federal Institute of Technology, Lausanne, CH-1015 Switzerland (Switzerland)
  2. Laboratoire Structures, Propriétés et Modélisation des Solides, UMR CNRS-École Centrale Paris, Grande Voie des Vignes, 92295 Châtenay-Malabry Cedex (France)
  3. Department of Materials, Physics and Energy Engineering, Nagoya University, Nagoya 464-8603 (Japan)
  4. (Japan)
Publication Date:
OSTI Identifier:
22415153
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 106; Journal Issue: 3; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ANNEALING; BISMUTH COMPOUNDS; DOMAIN STRUCTURE; EPITAXY; IRON OXIDES; LANTHANUM; LATTICE PARAMETERS; LEAD OXIDES; OXYGEN; RARE EARTH COMPOUNDS; SCANDIUM OXIDES; STRAINS; SUBSTRATES; THIN FILMS; TRIGONAL LATTICES; X-RAY DIFFRACTION