Effect of oxidizing atmosphere on the electrical properties of SrBi4Ti4O15 thin films obtained by the polymeric precursor method

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Data

2008-12-01

Autores

Simões, Alexandre Zirpoli [UNESP]
Ramirez, M. A. [UNESP]
Riccardi, C. S. [UNESP]
Longo, Elson [UNESP]
Varela, José Arana [UNESP]

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Editor

Elsevier B.V.

Resumo

Strontium bismuth titanate (SrBi4Ti4O15) thin films were deposited on (111) Pt/Ti/SiO2/Si Substrates by spin coating from the polymeric precursor method. Annealing in static air and dynamic oxygen atmosphere was performed at 700 degrees C for 2 h. The films were characterized by X-ray diffraction, atomic force microscopy and electric properties. The dielectric properties of SrBi4Ti4O15 films were found to be remarkably sensitive to the annealing atmosphere. The C-V characteristics of the metal-ferroelectric metal structure showed a typical butterfly loop that confirms the ferroelectric properties of the film related to the domains switching. SrBi4Ti4O15 thin films annealed in oxygen atmosphere showed lower ferroelectric behavior indicating a weak ferroelectricity along c-axis direction. Published by Elsevier Masson SAS.

Descrição

Palavras-chave

Thin films, Atomic force microscopy, Dielectric properties

Como citar

Solid State Sciences. Amsterdam: Elsevier B.V., v. 10, n. 12, p. 1951-1957, 2008.