CAPACITOR AND METHOD OF MANUFACTURING THE SAME
개요
발명자
Yuta SAITO
IPC 분류
CPC 분류
One object is to improve the insulation reliability of capacitors having dielectric layers containing rare earth elements. An aspect of the present disclosure provides a capacitor including a body, a first external electrode provided on the body, and a second external electrode provided on the body. The body has a first internal electrode layer, a second internal electrode layer, and a dielectric layer disposed between the first internal electrode layer and the second internal electrode layer. The dielectric layer contains crystal grains of barium titanate. The crystal grains each include a core portion and a shell portion covering the core portion. The concentration of Ho in the shell portion is from 0.5 at % to 5 at %. The concentration of Ni and the concentration of Fe in the shell portion are from 0.3 at % to 3 at %.
원문 (중국어)
One object is to improve the insulation reliability of capacitors having dielectric layers containing rare earth elements. An aspect of the present disclosure provides a capacitor including a body, a first external electrode provided on the body, and a second external electrode provided on the body. The body has a first internal electrode layer, a second internal electrode layer, and a dielectric layer disposed between the first internal electrode layer and the second internal electrode layer. The dielectric layer contains crystal grains of barium titanate. The crystal grains each include a core portion and a shell portion covering the core portion. The concentration of Ho in the shell portion is from 0.5 at % to 5 at %. The concentration of Ni and the concentration of Fe in the shell portion are from 0.3 at % to 3 at %.