Soft chemistry preparation methods and properties of strontium titanate nanoparticles

A brief survey of chemical synthesis methods for SrTiO3 nanoparticle fabrication is presented. The principal features of microwave, mechano-chemical, coprecipitation, sol–gel, solvothermal and template methods as well as the limits of their application are described. Special attention was paid to nominally pure and transition metals doped SrTiO3 nanoparticles of 100–12 nm size, prepared by citrate method, their characterization, and dependence of lattice constant and optical band gap on particle size.