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Solid-state formation of lithium ferrites from mechanicallyactivated Li2CO3–Fe2O3 mixture
Journal article   Peer reviewed

Solid-state formation of lithium ferrites from mechanicallyactivated Li2CO3–Fe2O3 mixture

V. Berbenni, A. Marini, P. Matteazzi, R. Ricceri and N.J. Welham
Journal of the European Ceramic Society, Vol.23(3), pp.527-536
2003
DOI: https://doi.org/10.1016/S0955-2219(02)00150-4
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Abstract

The formation of lithium ferrites (LiFe5O8 and LiFeO2) from mechanically activated mixtures of Li2CO3–Fe2O3 has been studied using thermal analysis (TGA, DSC), evolved gas analysis (TG/FT-IR), X-ray powder diffraction (XRD), scanning electron microscopy (SEM) and particle size analysis. It is shown that mechanical activation of the precursors considerably enhances the reactivity of the solid system analysed and makes it possible to obtain reaction products with a much lower expense of thermal energy. In particular, lithium ferrites can be obtained at temperatures at least 160 °C lower than those necessary in the absence of mechanical activation. Moreover, both the microstructure and the allotropic ratio of the products, as well as the reaction path, are affected by mechanical activation.

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Domestic collaboration
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Citation topics
5 Physics
5.77 Applied Physics
5.77.196 Multiferroics
Web Of Science research areas
Materials Science, Ceramics
ESI research areas
Materials Science
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