Oxygen incorporation effects in annealed epitaxial La{sub (1-x)}Sr{sub x}MnO{sub 3} thin films

Journal Article · Wed Jun 15 00:00:00 EDT 2011 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.3596807· OSTI ID:21538452

Petrisor, T; Gabor, M S; Tiusan, C ^[1]; Boulle, A ^[2]; Bellouard, C ^[3]; Pana, O ^[4]; Petrisor, T ^[1]

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1. Technical University of Cluj-Napoca, Str. Memorandumului, nr. 28, 400114 Cluj-Napoca (Romania)
2. Science des Procedes Ceramiques et de Traitements de Surface (SPCTS), CNRS UMR 6638, Centre Europeen de la Ceramique, 12 rue Atlantis, 87068 Limoges (France)
3. Institut Jean Lamour, UMR 7198 CNRS-Nancy Universite, Vandoeuvre-les-Nancy (France)
4. National Institute for Research and Development of Molecular and Isotopic Technologies, P.O. Box 700, 400293, Cluj-Napoca (Romania)

This paper presents our results regarding oxygen incorporation effects in epitaxial La{sub (1-x)}Sr{sub x}MnO{sub 3} thin films, deposited on SrTiO{sub 3} (001) single crystal substrates, by annealing in different gas mixtures of argon and oxygen. A particular emphasis is placed on the correlation of structural properties with the magnetic properties of the films, Curie temperature, and coercive field. In this sense, we demonstrate that the evolution of the diffuse part of the {omega}-scans performed on the films are due to oxygen excess in the film lattice, which creates cationic vacancies within the films. Also, we show that two regimes of oxygen incorporation in the films exist, one in which the films evolve toward a single phase and oxygen stoichiometry is recovered, and a second one dominated by oxygen over-doping effects. In order to support our study, XPS measurements were performed, from which we have evaluated the Mn{sup 3+}/Mn{sup 4+} ionic ratio.

• OSTI ID: 21538452
• Journal Information: Journal of Applied Physics, Vol. 109, Issue 12; Other Information: DOI: 10.1063/1.3596807; (c) 2011 American Institute of Physics; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ANNEALING
ARGON
ATOMIC FORCE MICROSCOPY
BINARY MIXTURES
COERCIVE FORCE
CURIE POINT
LANTHANUM COMPOUNDS
LAYERS
MAGNETIC PROPERTIES
MONOCRYSTALS
OXYGEN
SPUTTERING
STOICHIOMETRY
STRONTIUM COMPOUNDS
STRONTIUM TITANATES
SUBSTRATES
THIN FILMS
VACANCIES
VAPOR PHASE EPITAXY
X-RAY PHOTOELECTRON SPECTROSCOPY
ALKALINE EARTH METAL COMPOUNDS
CRYSTAL DEFECTS
CRYSTAL GROWTH METHODS
CRYSTAL STRUCTURE
CRYSTALS
DISPERSIONS
ELECTRON SPECTROSCOPY
ELEMENTS
EPITAXY
FILMS
FLUIDS
GASES
HEAT TREATMENTS
MICROSCOPY
MIXTURES
NONMETALS
OXYGEN COMPOUNDS
PHOTOELECTRON SPECTROSCOPY
PHYSICAL PROPERTIES
POINT DEFECTS
RARE EARTH COMPOUNDS
RARE GASES
SPECTROSCOPY
THERMODYNAMIC PROPERTIES
TITANATES
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE