Invention Grant
- Patent Title: Hexagonal type barium titanate powder, producing method thereof, dielectric ceramic composition and electronic component
- Patent Title (中): 六角型钛酸钡粉末,其制造方法,电介质陶瓷组合物和电子部件
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Application No.: US12941323Application Date: 2010-11-08
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Publication No.: US08456798B2Publication Date: 2013-06-04
- Inventor: Hidesada Natsui , Tatsuya Ishii , Takeo Tsukada
- Applicant: Hidesada Natsui , Tatsuya Ishii , Takeo Tsukada
- Applicant Address: JP Tokyo
- Assignee: TDK Corporation
- Current Assignee: TDK Corporation
- Current Assignee Address: JP Tokyo
- Agency: Oliff & Berridge, PLC
- Priority: JP2009-255516 20091106; JP2009-255525 20091106; JP2010-222708 20100930
- Main IPC: H01G4/06
- IPC: H01G4/06

Abstract:
Dielectric ceramic composition includes a hexagonal type barium titanate as a main component shown by a generic formula of (Ba1-αMα)A(Ti1-βMnβ)BO3 and having hexagonal structure wherein an effective ionic radius of 12-coordinated “M” is −20% or more to +20% or less with respect to an effective ionic radius of 12-coordinated Ba2+ and the A, B, α and β satisfy relations of 1.000
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