Ferroelectric and dielectric behaviour of Bi0.92La0.08FeO3 multiferroic thin films prepared by soft chemistry route
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Data
2007-12-01
Autores
Simoes, Alexandre Z.
Cavalcante, Laecio Santos
Riccardi, Carla Santos
Varela, José Arana [UNESP]
Longo, Elson [UNESP]
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Editor
Springer
Resumo
Bi0.92La0.08FeO3 (BLFO) thin films were grown on platine substrates by the soft chemical route. Ferroelectric and dielectric behaviors of BLFO films deposited by spin-coating technique and annealed at 773 K for 2 h in air atmosphere were explained. BLFO thin films obtained presents a rhombohedral structure. The BLFO films present dielectric and ferroelectric behaviors with dielectric permittivity and dielectric loss of approximately 81 and 0.0144 at 1 kHz. The Au/BLFO/Pt capacitor shows a hysteresis loop with remnant polarization of 20.6 mu C/cm(2) and coercive field of 53.88 kV/cm. The polarization switching and the fatigue behavior of the BLFO films were significantly enhanced.
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ferroelectrics, dielectric, microstructure, BiFeO3, thin films
Como citar
Journal of Sol-gel Science and Technology. Dordrecht: Springer, v. 44, n. 3, p. 269-273, 2007.