Development of fine-grained dielectric ceramics using hydrothermal method

Abstract

Dielectric ceramics used in multilayer ceramic capacitors (MLCCs) require not only a high dielectric constant but also high dielectric breakdown strength, which is achieved by precise control of the microstructure. The hydrothermal method, one of the liquid-phase synthesis methods, is effective for synthesizing well-dispersed dielectric particles with small particle size, and by sintering such particles, we can obtain dense and fine-grained dielectric ceramics. This paper presents our recent attempts to develop new dielectric ceramics using the hydrothermal method, focusing on bismuth potassium titanate-based materials.