A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
PROBLEM TO BE SOLVED: To provide a capacitor with high effective capacity.SOLUTION: A capacitor comprises: a capacitor body 1 in which a plurality of dielectric layers 5 and a plurality of internal electrode layers 7 are alternately laminated; and an external electrode 3 provided on an edge face from which the internal electrode layers 7 of the capacitor body 1 are exposed. The dielectric layers 5 are each formed by dielectric ceramic made of crystal grains 9 having barium titanate as its main constituent and containing vanadium. The crystal grains 9 each have the maximum concentration of the vanadium in the depth ranging from 1 to 20 nm from a surface 9a of each of the crystal grains 9. Also, the concentration of vanadium in the depth range deeper than 20 nm from the surface 9a is 0.05 atom% or lower.SELECTED DRAWING: Figure 2
【課題】 実効容量の高いコンデンサを提供する。【解決手段】 誘電体層５と内部電極層７とが交互に複数積層されたコンデンサ本体１と、該コンデンサ本体１の内部電極層７が露出した端面に設けられている外部電極３とを備えており、誘電体層５が、チタン酸バリウムを主成分とし、バナジウムを含む結晶粒子９によって構成された誘電体磁器からなり、結晶粒子９は、その結晶粒子９の表面９ａから１ｎｍ以上２０ｎｍ以内の深さの範囲にバナジウムの濃度の最大値を有するとともに、表面９ａからの深さが２０ｎｍより深い範囲におけるバナジウムの濃度が０．０５原子％以下である。【選択図】図２
PROBLEM TO BE SOLVED: To provide a capacitor with high effective capacity.SOLUTION: A capacitor comprises: a capacitor body 1 in which a plurality of dielectric layers 5 and a plurality of internal electrode layers 7 are alternately laminated; and an external electrode 3 provided on an edge face from which the internal electrode layers 7 of the capacitor body 1 are exposed. The dielectric layers 5 are each formed by dielectric ceramic made of crystal grains 9 having barium titanate as its main constituent and containing vanadium. The crystal grains 9 each have the maximum concentration of the vanadium in the depth ranging from 1 to 20 nm from a surface 9a of each of the crystal grains 9. Also, the concentration of vanadium in the depth range deeper than 20 nm from the surface 9a is 0.05 atom% or lower.SELECTED DRAWING: Figure 2
【課題】 実効容量の高いコンデンサを提供する。【解決手段】 誘電体層５と内部電極層７とが交互に複数積層されたコンデンサ本体１と、該コンデンサ本体１の内部電極層７が露出した端面に設けられている外部電極３とを備えており、誘電体層５が、チタン酸バリウムを主成分とし、バナジウムを含む結晶粒子９によって構成された誘電体磁器からなり、結晶粒子９は、その結晶粒子９の表面９ａから１ｎｍ以上２０ｎｍ以内の深さの範囲にバナジウムの濃度の最大値を有するとともに、表面９ａからの深さが２０ｎｍより深い範囲におけるバナジウムの濃度が０．０５原子％以下である。【選択図】図２
CAPACITOR
コンデンサ
KIGUCHI TAKAHIKO (author)
2018-09-06
Patent
Electronic Resource
Japanese