2022-10-282022-10-282018Gil González, E., Perejón Pazo, A., Sánchez Jiménez, P.E., Sayagués de Vega, M.J., Raj, R. y Pérez Maqueda, L.A. (2018). Phase-pure BiFeO3 produced by reaction flash-sintering of Bi2O3 and Fe2O3. Journal of Materials Chemistry, 6, 5356-5366. https://doi.org/10.1039/C7TA09239C.2050-74882050-7496https://hdl.handle.net/11441/138472Mixed powders of Bi2O3 and Fe2O3 are shown to yield single-phase, dense nanostructured polycrystals of BiFeO3 in reaction flash sintering experiments, carried out by applying a field of 50 V cm 1 and with the current limit set to 35 mA mm 2 . The furnace was heated at a constant rate with the reaction sintering taking place abruptly upon reaching 625 C. Remarkably, an intermediate bismuth-rich phase of the oxide that forms just before reaching the flash temperature transforms, and at the same time sinters, into singlephase BiFeO3 within a few seconds after the onset of the flash. The BiFeO3 so produced is electrically insulating, a property that is critical to its applications. This one-step synthesis of single-phase polycrystals of complex oxides from their basic constituents, by reaction flash sintering, is a significant development in the processing of complex oxides, which are normally difficult to sinter by conventional methods.application/pdf11 p.engAttribution-NonCommercial-NoDerivatives 4.0 Internacionalhttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/articleinfo:eu-repo/semantics/openAccess10.1039/C7TA09239C