Published May 19, 2003 | Version v1
Journal article Metadata-only

Impact of stress on oxygen vacancy ordering in epitaxial (La0.5Sr0.5)CoO3-∂ thin films

Creators

  • 1. Materials Department, University of California, Santa Barbara, California 93106-5050 (United States)
  • 2. International Sematech, Austin, Texas 78741-6499 (United States)
  • 3. Department of Physics, University of Houston, Houston Texas 77204-5005 (United States)

Description

We investigate oxygen vacancy ordering in epitaxial (La0.5Sr0.5)CoO3-∂ thin films grown by sputter deposition on (001) LaAlO3 and (001) SrTiO3. After annealing at 500 deg. C under oxygen partial pressures greater than those used during deposition, films transform to a long-range oxygen vacancy ordered structure with orthorhombic symmetry. Observed orientation variants of the oxygen vacancy ordered structures are different for the two substrates. We discuss the relationship between film stress due to lattice and thermal mismatch with the substrate, and vacancy ordering

Additional details

Identifiers

DOI
10.1063/1.1575503;

Publishing Information

Journal Title
Applied Physics Letters
Journal Volume
82
Journal Issue
20
Journal Page Range
p. 3427-3429
ISSN
0003-6951
CODEN
APPLAB

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
35037698
Subject category
S36: MATERIALS SCIENCE; S71: CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS;
Descriptors DEI
ANNEALING; COBALT OXIDES; DEPOSITION; EPITAXY; LANTHANUM OXIDES; OXYGEN; SPUTTERING; STRESSES; STRONTIUM OXIDES; SUBSTRATES; SYMMETRY; THIN FILMS; VACANCIES
Descriptors DEC
ALKALINE EARTH METAL COMPOUNDS; CHALCOGENIDES; COBALT COMPOUNDS; CRYSTAL DEFECTS; CRYSTAL GROWTH METHODS; CRYSTAL STRUCTURE; ELEMENTS; FILMS; HEAT TREATMENTS; LANTHANUM COMPOUNDS; NONMETALS; OXIDES; OXYGEN COMPOUNDS; POINT DEFECTS; RARE EARTH COMPOUNDS; STRONTIUM COMPOUNDS; TRANSITION ELEMENT COMPOUNDS

Optional Information

Notes
(c) 2003 American Institute of Physics.