Towards cubic modification of Li7La3Zr2O12 compound by mechanical milling and annealing of powders

The aim of these studies was to obtain single phase cubic modification of Li₇La₃Zr₂O₁₂ by mechanical milling and annealing of La(OH)₃, Li₂CO₃ and ZrO₂ powder mixture. Fritsch P5 planetary ball mill, Rigaku MiniFlex II X-ray diffractometer, Setaram TG-DSC 1500 analyser and FEI Titan 80-300 transmission electron microscope were used for sample preparation and investigations. The applied milling and annealing parameters allowed to obtain the significant contribution of c-Li₇La₃Zr₂O₁₂ in the sample structure, reaching 90%. Thermal measurements revealed more complex reactions requiring further studies.