Invention Grant
US07718560B2 Electronic device, dielectric ceramic composition and the production method
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电子器件,电介质陶瓷组合物及其制备方法
- Patent Title: Electronic device, dielectric ceramic composition and the production method
- Patent Title (中): 电子器件,电介质陶瓷组合物及其制备方法
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Application No.: US11808548Application Date: 2007-06-11
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Publication No.: US07718560B2Publication Date: 2010-05-18
- Inventor: Miyuki Yanagida , Akira Sato
- Applicant: Miyuki Yanagida , Akira Sato
- Applicant Address: JP Tokyo
- Assignee: TDK Corporation
- Current Assignee: TDK Corporation
- Current Assignee Address: JP Tokyo
- Agency: Oliff & Berridge, PLC
- Priority: JP2006-162794 20060612
- Main IPC: C04B35/468
- IPC: C04B35/468

Abstract:
A production method of a dielectric ceramic composition comprising a main component including a compound having a perovskite-type crystal structure expressed by a composition formula (Ba1-xCax) (Ti1-yZry)O3 (note that 0≦x≦0.2, 0≦y≦0.2), and a fourth subcomponent including an oxide of R (note that R is at least one selected from Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu); comprising steps of obtaining a post-reaction material by bringing a material of the main component to react in advance with a part of a material of the fourth subcomponent to be included in the dielectric ceramic composition, and adding rest of material of the fourth subcomponent to be included in the dielectric ceramic composition into the post-reaction material. According to the present invention, both of a dielectric ceramic composition capable of improving the specific permittivity and a temperature characteristic of capacitance can be preferable, and the production method can be provided.
Public/Granted literature
- US20070287625A1 Electronic device, dielectric ceramic composition and the production method Public/Granted day:2007-12-13
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