Fabrication and analysis of nanocrystalline BaTiO₃ thin films on (001) SrTiO₃:Nb substrates by electrophoretic deposition (EPD)

Abstract

We fabricated nanocrystalline barium titanate (BaTiO₃) thin films by EPD on conductive (001) SrTiO₃ substrates and could convert them into epitaxial thin film below 1000˚C. BaTiO₃ nanoparticles, used for EPD, with diameters in the range 8-10 nm were synthesized by a high-concentration alkoxide sol-gel method, and EPD was carried out at 5V for 5min. BaTiO₃ nanoparticles thin films before and after firing were subjected to phase and crystallographic analyses using X-ray diffractometry, scanning electron microscopy, and Raman spectroscopy.