Piezoresponse behavior of niobium doped bismuth ferrite thin films grown by chemical method

This paper focuses on the piezoresponse characteristics at room temperature in niobium modified bismuth ferrite thin films (BFN) deposited on Pt/TiO 2/SiO 2/Si (1 0 0) substrates by the soft chemical method. The obtained films were grown at a temperature of 500 °C. The Nb dopant is effective in impr...

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Bibliographic Details
Published in:Journal of alloys and compounds 2010-03, Vol.493 (1), p.158-162
Main Authors: Simões, A.Z., Garcia, Filiberto Gonzalez, Riccardi, C.S.
Format: Article
Language:English
Subjects:
Bismuth
Chemical synthesis
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Dielectrics, piezoelectrics, and ferroelectrics and their properties
Electrical properties
Exact sciences and technology
Ferrite
Ferroelectrics
Niobium
Physics
Piezoelectricity
Piezoelectricity and electromechanical effects
Silicon substrates
Thin films
Titanium dioxide
X-ray photoelectron spectroscopy
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Summary:This paper focuses on the piezoresponse characteristics at room temperature in niobium modified bismuth ferrite thin films (BFN) deposited on Pt/TiO 2/SiO 2/Si (1 0 0) substrates by the soft chemical method. The obtained films were grown at a temperature of 500 °C. The Nb dopant is effective in improving electrical properties of BFO films. XPS results show a single-phase Nb-doped BFO thin films with a Fe 3+ valence state. It was found that Nb-doped BFO thin films exhibited good electrical properties, such as improved capacitance–voltage and high piezoeletric coefficient, indicating a promising material for use in future memories based on magnetic ferroelectrics.
ISSN:0925-8388
1873-4669
DOI:10.1016/j.jallcom.2009.12.113