Otro
Ferroelectric and dielectric behaviour of Bi0.92La0.08FeO3 multiferroic thin films prepared by soft chemistry route
Registro en:
Journal of Sol-gel Science and Technology. Dordrecht: Springer, v. 44, n. 3, p. 269-273, 2007.
0928-0707
10.1007/s10971-007-1629-4
WOS:000250626500015
Autor
Simoes, Alexandre Z.
Cavalcante, Laecio Santos
Riccardi, Carla Santos
Varela, José Arana
Longo, Elson
Resumen
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.