Invention Grant
- Patent Title: Dielectric ceramic composition and ceramic electronic device
- Patent Title (中): 介电陶瓷组合物和陶瓷电子器件
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Application No.: US13221246Application Date: 2011-08-30
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Publication No.: US08507395B2Publication Date: 2013-08-13
- Inventor: Yoshitaka Murakawa , Yukie Nakano , Shirou Ootsuki
- Applicant: Yoshitaka Murakawa , Yukie Nakano , Shirou Ootsuki
- Applicant Address: JP Tokyo
- Assignee: TDK Corporation
- Current Assignee: TDK Corporation
- Current Assignee Address: JP Tokyo
- Agency: Oliff & Berridge, PLC
- Priority: JP2010-195107 20100831
- Main IPC: C04B35/468
- IPC: C04B35/468

Abstract:
A dielectric ceramic composition comprising a compound expressed by a formula of ABO3, where “A” is Ba alone, or Ba and at least one selected from Ca and Sr, and “B” is Ti alone, or Ti and Zr, and having a perovskite-type crystal structure, and an oxide of a rare-earth element including Sc and Y. The dielectric ceramic composition includes a dielectric particle having a core-shell structure which has a core and a shell, the shell being present around the core and including at least “R” element, and in the shell, a region showing a maximum content rate of “R” element is a boundary region between the core and the shell.
Public/Granted literature
- US20120050941A1 DIELECTRIC CERAMIC COMPOSITION AND CERAMIC ELECTRONIC DEVICE Public/Granted day:2012-03-01
Information query
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