04829033 is referenced by 20 patents and cites 31 patents.

Barium titanate based dielectric compositions having the general formula Ba.sub.(1-x-x'-x") Pb.sub.x Ca.sub.x' Sr.sub.x" Ti .sub.(1-y-y'-y") Sn.sub.y Zr.sub.y' Hf.sub.y" O.sub.3, wherein x, x', x" and y, y', y" represent mole fractions of the divalent and tetravalent cations and x and x' have independent value greater than 0.01 and less than 0.3 and x", y, y' and y" have independent values greater than zero and less than 0.3, such that the sum (x+x'+x") is greater than 0.01 and less than 0.4 and the sum (y+y'+y") does not exceed 0.4. Regardless of the specific composition selected, the products of the invention have a mean primary particle size in the range of 0.05 to 0.4 microns with a very narrow particle size distribution. The products are dispersible so that the mean particle size determined by image anaylsis and by sedimentation are comparable.

Title
Barium titanate powders
Application Number
859577
Publication Number
4829033
Application Date
February 1, 1988
Publication Date
May 9, 1989
Inventor
Laurence Wagner
North Reading
MA, US
Robert C Reid
Lexington
MA, US
Jameel Menashi
Lexington
MA, US
Agent
Lawrence A Chaletsky
Assignee
Cabot Corporation
MA, US
IPC
C04B 35/49
C04B 35/46
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