Calorimetric investigation of radiation-thermal synthesized lithium pentaferrite

LiFe₅O₈ solid-phase synthesis at radiation-thermal (RT) annealing of lithium carbonate and iron oxide mechanical mixture was studied using thermal analysis (TG/DSC) and X-ray powder diffraction (XRD) techniques. The RT annealing was proceeded with high-power pulsing beam of 2.4 MeV electrons. It was shown that RT synthesis of the precursors considerably enhances the reactivity of the solid system within temperatures range 600-800 °C. In particular, lithium ferrite can be obtained at lower temperatures than those necessary in the absence of RT annealing.