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Elucidating the real effect of Ba and Co doping on the magnetic and optical properties of BiFeO3
ARMANDO REYES ROJAS
LUIS EDMUNDO FUENTES COBAS
Acceso Abierto
Atribución-NoComercial-SinDerivadas
https://doi.org/10.1016/j.ceramint.2015.03.322
A. Sol–gel processesC. Magnetic propertiesC. Optical propertiesD. Perovskites
We present Ba/Co co-doping effects on BiFeO3 structure, optical, ferromagnetic, and ferroelectric properties at room temperature. XRD indicates a high distortion of the rhombohedral symmetry, confirmed by Raman spectroscopy, where a change in the intensity ratio of E-1/A1-1 vibrational modes is a result of the partial substitution of Fe3+ by Co3+. This induces an A-site disorder in the FeO6 octahedra. Co2+ acts as grain growth inhibitor reducing average grain sizes from 304 nm (without cobalt) to 200 nm (with cobalt) after sintering. The magnetization results show that the Co-cation impregnated samples have higher magnetization (31%) than doped and undoped samples.
2015
Artículo
Inglés
Rojas-George, G., Concha-Balderrama, A., Silva, J., Fuentes, L., & Reyes-Rojas, A. (2015). Elucidating the real effect of Ba and Co doping on the magnetic and optical properties of BiFeO 3. Ceramics International, 41(7), 9140-9145.
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