Synthesis of Barium Titanate (BT) Nano Particles via Hydrothermal Route for the Production of BT‐Polymer Nanocomposite

Barium titanate (high‐k dielectric material) nano‐powders (approx. 30 nm to 60 nm) were synthesised using hydrothermal route under moderate conditions. Effect of temperature and time was studied using transmission electron microscopy (TEM), scanning electron microscopy (SEM) and X‐ray diffraction techniques. Obtained barium titanate nano‐powders were dispersed in thermoplastic polymethyl methacrylate (PMMA) to get homogeneous dispersions. Thin layers were obtained using these dispersions to achieve BaTiO3 endorsed polymer layers by dip‐coating for improved polymer insulators on various substrates e.g., glass, and Au sputtered silicon wafers. SEM and focused ion beam (FIB) techniques were used to study the dispersion of barium titanate nano‐particles in PMMA. The layers obtained showed homogenous distribution of BaTiO3 nano particles with no agglomeration.