積層セラミックコンデンサ

Laminated ceramic capacitor

Abstract

PROBLEM TO BE SOLVED: To provide a laminated ceramic capacitor which has temperature characteristics for achieving a stable dielectric constant, small polarization charge, and a high dielectric constant.SOLUTION: A dielectric layer 5 includes a main crystal phase mainly composed of a barium titanate, where the average particle diameter of crystal particles is 0.05 to 0.2 μm and the particle diameter variance (CV) of the crystal particles is 50% or less, and is made of a dielectric porcelain containing a yttrium, manganese, and magnesium. The percentage of the diffraction strength at a plane index (222) of a pyrochlore to the diffraction strength at a plane index (110) of the barium titanate is 12 to 18%.
【課題】 安定な比誘電率の温度特性を有するとともに分極電荷が小さく、か比誘電率の高い積層セラミックコンデンサを提供する。 【解決手段】 誘電体層5が、チタン酸バリウムを主成分とする結晶相を主たる結晶相とし、結晶粒子の平均粒径が0.05〜0.2μmであるとともに、前記結晶粒子の粒径のばらつき(CV)が50%以下であり、誘電体磁器にイットリウム、マンガン、マグネシウムを含み、かつチタン酸バリウムの面指数(110)の回折強度に対するパイロクロアの面指数(222)の回折強度の割合が12〜18%である。 【選択図】 図1

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    KR-101606978-B1March 28, 2016삼성전기주식회사유전체 자기 조성물 및 이를 포함하는 적층 세라믹 커패시터
    KR-20150121569-AOctober 29, 2015삼성전기주식회사유전체 자기 조성물 및 이를 포함하는 적층 세라믹 커패시터
    US-9255035-B2February 09, 2016Samsung Electro-Mechanics Co., Ltd.Dielectric ceramic composition and multilayer ceramic capacitor containing the same