|About this Abstract
||Materials Science & Technology 2012
||Solution-Based Processing for Ceramic Materials
||Hydrothermal Synthesis of Sub-100nm Ultrafine BaTiO3 Nanoparticles
||Changyeon Baek, San Moon, Chang-Hak Choi, Do Kyung Kim
|On-Site Speaker (Planned)
BaTiO<sub>3</sub> has been widely used as a primary material in various electronic devices including thermistors, electro-optical devices, and multilayer ceramic capacitors (MLCCs) due to its prominent dielectric properties. The advances in portable devices necessitate the fabrication of miniaturized MLCCs maintaining high capacity. In this regard the size of BaTiO<sub>3</sub> powders is essential to be reduced down to below 100nm for the 1μm-thickness dielectric layer. In this study, Sub-100nm-sized BaTiO<sub>3</sub> nanopowders are synthesized via facile hydrothermal process with glycol and carboxylic acid. We carry out various analyses to confirm the influences of those additives to the size and tetragonality of BaTiO<sub>3</sub> nanopowders. The crystallinity and morphology of resulting BaTiO<sub>3</sub> nanoparticles have been characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM) and Raman spectroscopy.Intragranular pores in the as-synthesized BaTiO<sub>3</sub> particles are observed using scanning transmission electron microscopy (STEM).