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Title:
METHOD FOR PRODUCING CALCIUM-DOPED BARIUM TITANATE
Document Type and Number:
Japanese Patent JP2005281092
Kind Code:
A
Abstract:

To provide a method for producing calcium-doped barium titanate which is a superfine particle having an average particle diameter of ≤1 μm, spherical, good in crystallinity, and excellent in dispersibility when it is used for preparing slurry or paste, has a narrow particle size distribution and ferroelectricity, and sufficiently satisfies such a property that the sintering property is good, and in which the atomic ratios of Ca, Ba and Ti can be controlled with good precision.

Aqueous solutions of a titanium compound, a barium compound and a calcium compound are each prepared. Then the aqueous solutions of respective compounds are brought into contact with one another in an aqueous alkali solution without mixing the aqueous solution of the titanium compound with the aqueous solutions of the barium compound and the titanium compound before adding them into the aqueous alkali solution.


Inventors:
SAKAI HIDEKI
Application Number:
JP2004000099828
Publication Date:
October 13, 2005
Filing Date:
March 30, 2004
Export Citation:
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Assignee:
TOHO TITANIUM CO LTD
International Classes:
C04B35/46; C01G23/00; H01B3/12; H01G4/12; H01G4/30; (IPC1-7): C01G23/00; C04B35/46; H01G4/12; H01G4/30
Attorney, Agent or Firm:
末成 幹生