Synthesis and dielectric investigations of BaTiO3 obtained by soft chemistry route

A new strategy for preparation of nano-sized barium titanate (BaTiO3) particles was applied by using: layered (tetramethyl)ammonium titanate, barium acetate and tetramethylammonium hydroxide. An addition of barium salt to aqueous layered titanate colloids leads to a precipitation phenomenon by which barium titanate precursor was obtained. The mechanism of this reaction is based on ions exchange which permits to incorporate barium ions into titanate layers. This was confirmed by comparison of broadband dielectric spectroscopy (BDS) data of layered (tetramethyl)ammonium titanate and barium titanate precursor.