Synthesis of BaCO₃ Nano-particles Through a Polymer-Assisted Precipitation Method

BaCO₃ powders with different morphologies have been synthesized by a simple polymer-assisted precipitation method. The influence of diethylene glycol (DEG) as a modifier on the powder particle characteristics has been investigated using XRD, FESEM, FT-IR, and VSM techniques. It is revealed that both crystallinity and crystallite size of particles can be greatly affected through the change in DEG:water ratio. The crystallite size decreases from 32 nm for water solution to 20 nm for DEG’s solution. The FESEM images also show that DEG:water volume ratio causes the shape of particle to change greatly. While particle synthesized in presence of water solution has rodlike shape with 900 nm in length and 276 nm in width, particle synthesized in DEG solution has completely spherical shape with a mean particle size of 93 nm. Finally, the performance of barium carbonate nano-particles produced in this work has been examined in the processing of barium hexaferrite magnetic phase.