Microstructure and dielectric properties of silver-barium titanate nanocomplex materials by wet chemical approach

作者：Ueno Shintaro^*; Sakamoto Yasunao; Nakashima Kouichi; Wada Satoshi

来源：Japanese Journal of Applied Physics, 2014, 53(9): 09PB05.

DOI：10.7567/JJAP.53.09PB05

To develop ceramic capacitors with a high effective dielectric constant, we attempted to fabricate BaTiO3 (BT) complexes with embedded Ag nanoparticles by wet chemical processes. Ag nanoparticle-adsorbed dendritic BT particles, Ag BT hybrid particles, were synthesized from the sol gel-derived precursor gel powders containing Ag, Ba, and Ti by hydrothermal treatment. These particles were pressed with BT fillers and TiO2 precursor nanoparticles into green compacts, and then, the green compacts were chemically converted into the Ag/BT nanocomplex compacts in Ba(OH)(2) aqueous solution under the hydrothermal condition at 160 degrees C. The effective dielectric constant of the resultant Ag/BT nanocomplexes increases with an increase in Ag content. The maximal effective dielectric constant of approximately 900 was recorded for the nanocomplex with the Ag content of 10.7 vol %.

• 出版日期2014-9