Open-Bench Method for the Preparation of BaTiO3, SrTiO3, and BaxSr1-xTiO3Nanocrystals at 80 °C.

In this letter, we report the firstfacile open-bench synthesis of BaTiO3, SrTiO3nanocrystals, and their nanosolid solutions BaxSr1-xTiO3(BST) at 80 °C. The size of the BST nanoparticles was readily tuned from ∼50 to ∼10 nm with achievable giant dielectric constants. The process yielded these important perovskite mixed-metal oxide crystals of high quality on the nanometer scale without a history of thermal stress. This new synthesis system involves inorganic starting materials without organic components and does not require demanding conditions such as an inert environment, high pressure, and high temperature. [ABSTRACT FROM AUTHOR]