[18a-E317-1~10] 9.1 Dielectrics, ferroelectrics

[18a-E317-1] Low-Temperature Preparation of CaTiO₃/Ti Composite Dielectric Materials with Boundary-layer Structure

〇(M1)Saki Isero¹, Shintaro Ueno¹, Ichiro Fujii¹, Shirou Ootsuki², Masahito Furukawa², Satoshi Wada¹ (1.Univ. of Yamanashi, 2.TDK Corp.)

Keywords:dielectrics

For the development of high-performance ceramic capacitors, we have focused on boundary-layer-type (BL) capacitors. Then, we tried to use paraelectrics, CaTiO3, as the boundary layer to prepare temperature-independent CaTiO₃/Ti composite BL capacitors with higher dielectric breakdown strength. We synthesized Ti(core)-CaTiO₃(shell) particles by the hydrothermal method and the green compacts by pressing. The CaTiO₃/Ti composites were prepared by connecting between these core-shell particles constituting compacts via chemical reaction.