Influence of the network modifier on the characteristics of MSnO3 (M=Sr and Ca) thin films synthesized by chemical solution deposition

CaSnO3 and SrSnO3 alkaline earth stannate thin films were prepared by chemical solution deposition using the polymeric precursor method on various single crystal substrates (R- and C-sapphire and 100-SrTiO3) at different temperatures. The films were characterized by X-ray diffraction (θ–2θ, ω- and φ...

Full description

Saved in:
Bibliographic Details
Published in:Journal of solid state chemistry 2013-03, Vol.199, p.34-41
Main Authors: Alves, M.C.F., Marinho, R.M.M., Casali, G.P., Siu-Li, M., Députier, S., Guilloux-Viry, M., Souza, A.G., Longo, E., Weber, I.T., Santos, I.M.G., Bouquet, V.
Format: Article
Language:English
Subjects:
Chemical Sciences
Chemical solution deposition
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Condensed matter: structure, mechanical and thermal properties
Cross-disciplinary physics: materials science
rheology
Crystalline state (including molecular motions in solids)
Crystallization
Deposition
Epitaxial growth
Epitaxy
Exact sciences and technology
Growth from solutions
Liquid phase epitaxy
deposition from liquid phases (melts, solutions, and surface layers on liquids)
Material chemistry
Materials science
Methods of crystal growth
physics of crystal growth
Methods of deposition of films and coatings
film growth and epitaxy
Networks
Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation
Perovskite
Photoluminescence
Physics
Polymeric precursor method
Sapphire
Stannates
Strontium titanates
Structure of solids and liquids
crystallography
Theory of crystal structure, crystal symmetry
calculations and modeling
Thin films
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:CaSnO3 and SrSnO3 alkaline earth stannate thin films were prepared by chemical solution deposition using the polymeric precursor method on various single crystal substrates (R- and C-sapphire and 100-SrTiO3) at different temperatures. The films were characterized by X-ray diffraction (θ–2θ, ω- and φ-scans), field emission scanning electron microscopy, atomic force microscopy, micro-Raman spectroscopy and photoluminescence. Epitaxial SrSnO3 and CaSnO3 thin films were obtained on SrTiO3 with a high crystalline quality. The long-range symmetry promoted a short-range disorder which led to photoluminescence in the epitaxial films. In contrast, the films deposited on sapphire exhibited a random polycrystalline growth with no meaningful emission regardless of the substrate orientation. The network modifier (Ca or Sr) and the substrate (sapphire or SrTiO3) influenced the crystallization process and/or the microstructure. Higher is the tilts of the SnO6 octahedra, as in CaSnO3, higher is the crystallization temperature, which changed also the nucleation/grain growth process. The morphology of films on sapphire substrate was strongly influenced by the network modifier. [Display omitted] ► MSnO3 (M=Ca, Sr) thin films were synthesized by CSD on single crystal. ► The influence of Ca/Sr on structural and microstructural properties was studied. ► Epitaxial films were obtained on STO and polycrystalline films on sapphire. ► The network modifier influenced the crystallization process of the films. ► The short-range order was modified by the epitaxial growth.
ISSN:0022-4596
1095-726X
DOI:10.1016/j.jssc.2012.11.014