Tdk Corporation

Yosuke Konno

Masayuki Sato

Shunichi Yuri

Tsutomu Odashima

Yasuhiro Ito

Takashi Morita

Yushi Kanou

Kenta Yamashita

A ceramic electronic component includes an interior part and an exterior part. The interior part includes an interior part dielectric layer and an internal electrode layer. The exterior part includes an exterior part dielectric layer. The exterior part is positioned outside the interior part along a laminating direction thereof. The interior part dielectric layer and the exterior part dielectric layer respectively contain barium titanate as a main component. &#x3b2;&#x2212;&#x3b1;&#x2265;0.20 and &#x3b1;/&#x3b2;&#x2264;0.88 are satisfied, where &#x3b1; mol part and &#x3b2; mol part are respectively an amount of a rare earth element contained in the interior and exterior part dielectric layers, provided that an amount of barium titanate contained in the interior and exterior part dielectric layers is respectively 100 mol parts in terms of BaTiO.

Ceramic electronic component

A ceramic electronic component includes a dielectric layer and an electrode layer. The dielectric layer contains barium titanate and yttrium. The dielectric layer contains dielectric particles and Y&#x2014;Ti segregation particles. An area ratio occupied by the Y&#x2014;Ti segregation particles is 1.3% or less on a cross section of the dielectric layer.

A ceramic electronic component includes a dielectric layer and an electrode layer. The dielectric layer contains a plurality of ceramic particles and grain boundary phases present therebetween. A main component of the ceramic particles is barium titanate. An average thickness of the grain boundary phases is 1.0 nm or more. A thickness variation &#x3c3; of the grain boundary phases is 0.1 nm or less.

Growing community of inventors

Nikaho, Japan

Yosuke Konno