Solvothermal synthesis of lutetium aluminum garnet nanopowders: Determination of the optimum synthesis conditions

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Lutetium aluminum garnet (LuAG) nanopowders were successfully synthesized by a solvothermal method using ethylenediamine as a solvent. We found that the reaction medium, the reaction temperature and the holding time are important factors during the synthesis of LuAG nanopowders. Optimum preparation conditions were obtained in this work. The synthesized LuAG nanopowders are single-phase with desirable properties such as good dispersivity, no aggregation, fine spherical grains and a relatively narrow grain size distribution suggesting that the LuAG nanopowders are promising for application in the compacting and sintering of ceramics. This solvothermal synthesis route provides a new approach for the preparation of LuAG nanopowders at low temperatures.