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Direct mechanosynthesis of pure BiFeO3 perovskite nanoparticles: reaction mechanism

AutorPerejón, Antonio ; Murafa, Nataliya; Sánchez-Jiménez, P.E. ; Criado Luque, J.M. ; Diánez, M. J.; Pérez-Maqueda, Luis A.
Fecha de publicación2013
EditorRoyal Society of Chemistry (Great Britain)
CitaciónJournal of Material Chemistry C, 22: 3551-3562 (2013)
Resumenn this work, a mechanochemical procedure is proposed as a simple and fast method to synthesize the pure BiFeO3 perovskite phase as a nanostructured material without the need for purification treatments, while the mechanochemical reaction mechanism has been investigated and correlated with that of the conventional solid-state reaction. Thus, different milling conditions have been used as a tool for tailoring the crystallite size of the resulting BiFeO3 nanoparticles. The materials prepared by the mechanochemical reaction could be annealed or sintered without the formation of undesirable phases. Both the ferroelectric and ferromagnetic transitions were observed by DSC. Finally, the dielectric constants of the prepared material at different frequencies as a function of the temperature have been measured, showing that the material is clearly an isolator below 200 °C, characteristic of a high quality BiFeO3 material.
Versión del editorhttp://dx.doi.org/10.1039/C3TC30446A
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