Synthesis of BaTiO₃/Ag nanocomposites using a sonochemical process and low-temperature sintering

ABSTRACT

A barium titanium oxide/silver (BaTiO₃/Ag) nanocomposite powder was synthesized using a sonochemical process. By irradiating an ethanol solution of BaTiO₃ and silver oxide (Ag₂O), Ag₂O thermally decomposed at 40°C and Ag-loaded BaTiO₃ nanocomposites powder was obtained. Nanocomposites containing 30 vol% Ag sintered at 1000°C showed near densities and higher dielectric constants compared to those of BaTiO₃ sintered at 1300°C. Moreover, percolation did not occur because the Ag nanoparticles were uniformly dispersed and loaded onto the surface of BaTiO₃. This sonochemical method is expected to be a new process for obtaining uniformly dispersed and loaded nanocomposite powders without percolation, even in large amounts.

KEYWORDS:

• Nanocomposites
• sonochemical process
• low-temperature sintering
• MLCC
• barium titanium oxide

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

This work was supported by JSPS KAKENHI Grant Number JP 22H02117.