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Ferroelectric and dielectric behaviour of Bi0.92La0.08FeO3 multiferroic thin films prepared by soft chemistry route |
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| Authors: | Alexandre Z Simões Laecio Santos Cavalcante Carla Santos Riccardi José A Varela Elson Longo |
| Institution: | 1. Faculdade de Ciêencias, Departamento de Química, Universidade Estadual Paulista, Av. Luiz Edmundo Carrijo Coube, 14-01, Vargem Limpa, Bauru, SP, 17033-360, Brazil 2. Laboratório Interdisciplinar de Eletroquímica e Ceramica, Departamento de Química, Universidade Federal de S?o Carlos, P.O. Box 676, Sao Carlos, SP, 13565-905, Brazil 3. Laboratório Interdisciplinar em Ceramica, Departamento de Físico-Química, Instituto de Química, Universidade Estadual Paulista, P.O. Box 355, Araraquara, SP, 14801-907, Brazil |
| Abstract: | 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 μC/cm2 and coercive field of 53.88 kV/cm. The polarization switching and the fatigue behavior of the BLFO films were significantly enhanced. |
| Keywords: | Ferroelectrics Dielectric Microstructure BiFeO3 Thin films |
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