Influence of nanogold additives on phase formation, microstructure and dielectric properties of perovskite BaTiO<inf>3</inf> ceramics

• Main Authors: Jeeranan Nonkumwong, Supon Ananta, Laongnuan Srisombat
• Format: Journal
• Published: 2018
• Subjects: Agricultural and Biological Sciences
• Online Access: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84939953160&origin=inward; http://cmuir.cmu.ac.th/jspui/handle/6653943832/44330
• Institution: Chiang Mai University

© 2015, Springer-Verlag Berlin Heidelberg. The formation of perovskite phase, microstructure and dielectric properties of nanogold-modified barium titanate (BaTiO 3 ) ceramics was examined as a function of gold nanoparticle contents by employing a combination of X-ray diffraction, scanning electron microscopy, energy-dispersive X-ray, Archimedes principle and dielectric measurement techniques. These ceramics were fabricated from a simple mixed-oxide method. The amount of gold nanoparticles was found to be one of the key factors controlling densification, grain growth and dielectric response in BaTiO 3 ceramics. It was found that under suitable amount of nanogold addition (4 mol%), highly dense perovskite BaTiO 3 ceramics with homogeneous microstructures of refined grains (~0.5–3.1 μm) and excellence dielectric properties can be produced.