Taiyo Yuden Co., Ltd.

Sadanori Shimoda

Tomoaki Nakamura

Mikio Tahara

Minoru Ryu

Keiichi Hatano

Daisuke Sakate

Fumi Taniguchi

In an exemplary embodiment, a piezoelectric ceramic composition is an alkali niobate-based piezoelectric ceramic composition whose primary component is a compound expressed by the general formula LiNaKNbO(where 0<x<1, 0<y<1, and x+y<1), and which contains 100 ppm or more but less than 1000 ppm of fluorine by mass. The alkali niobate-based piezoelectric ceramic composition demonstrates good properties even when sintered at low temperature.

Piezoelectric ceramic composition and manufacturing method thereof, including piezoelectric ceramic, piezoelectric element, and piezoelectric vibration device

A ceramic electronic component includes a multilayer chip having a substantially rectangular parallelepiped shape and including dielectric layers and internal electrode layers that are alternately stacked, the internal electrode layers being alternately exposed to two edge faces of the multilayer chip facing each other, and a pair of external electrodes respectively formed on the two edge faces so as to be connected to the internal electrode layers exposed on the respective edge faces, each external electrode extending to at least one side face of the multilayer chip, wherein in the multilayer chip, oxides including Zn and Ni are present around the internal electrode layer in a vicinity of a connection part connecting the internal electrode layer to the external electrode.

Ceramic electronic component and method of manufacturing the same

In an embodiment, a multilayer ceramic capacitorhas a capacitor body comprising a capacitive partconstituted by multiple internal electrode layersthat are stacked with dielectric layersin between, as well as dielectric cover partsthat respectively cover both sides of the capacitive partin the stacking direction. Also, the dielectric layersof the capacitive part, and the dielectric cover parts, contain elemental manganese, and the elemental manganese is distributed in such a way that its quantity gradually decreases in the depth direction from the exterior faces of the dielectric cover partstoward the center of the dielectric layersof the capacitive part

Growing community of inventors

Takasaki, Japan

Sadanori Shimoda