Invention Grant
- Patent Title: Multilayer ceramic capacitor and method for producing the same
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Application No.: US15163950Application Date: 2016-05-25
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Publication No.: US10283272B2Publication Date: 2019-05-07
- Inventor: Akitaka Doi , Shinichi Yamaguchi , Shoichiro Suzuki
- Applicant: Murata Manufacturing Co., Ltd.
- Applicant Address: JP Nagaokakyo-Shi, Kyoto-Fu
- Assignee: MURATA MANUFACTURING CO., LTD.
- Current Assignee: MURATA MANUFACTURING CO., LTD.
- Current Assignee Address: JP Nagaokakyo-Shi, Kyoto-Fu
- Agency: Arent Fox LLP
- Priority: JP2015-114867 20150605
- Main IPC: H01G4/30
- IPC: H01G4/30 ; H01G4/005 ; H01G4/008 ; H01G4/232

Abstract:
A multilayer ceramic capacitor having inner electrodes containing at least one metal selected from Cu, Ag, Pd, Pt, Rh, Ir, Ru, and Os in an amount of 0.1 atom % or more that is dissolved in Ni and Sn to form a solid solution. The percentage of Sn with respect to the total amount of Ni and Sn in near-surface regions each located at a depth of 2 nm from a surface of the inner electrode in contact with an adjacent ceramic dielectric layer is 1.4 or more atom %, and X−Y≥1.0, where X represents the atomic percentage of Sn in the near-surface regions and Y represents the atomic percentage of Sn in mid-thickness regions of the inner electrodes. A method for producing a multilayer ceramic capacitor includes annealing the ceramic multilayer body to increase, in the inner electrodes, the percentage of Sn in the near-surface regions.
Public/Granted literature
- US20160358713A1 MULTILAYER CERAMIC CAPACITOR AND METHOD FOR PRODUCING THE SAME Public/Granted day:2016-12-08
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