Method for producing fine particles of lead zirconate

Details Method for producing fine particles of lead zirconate Method for producing fine particles of lead zirconate

C - Chemistry, Metallurgy

01

G

23/252

C01G 21/00 (2006.01) C01G 25/00 (2006.01) C01G 25/02 (2006.01)

Patent

CA 1287475

ABSTRACT OF THE DISCLOSURE The present invention relates to the synthesis of fine particles of lead zirconate which is an antiferroelectric material. The hydrolysis product of a zirconium compound or a water-soluble zirconium salt and a water-soluble lead compound are used as the starting materials. The synthesis is carried out in an aqueous solution having a pH value in the range from 13.5 to 14.4 and at a temperature of at least 175°C in such a manner as to provide for wet synthesis of fing particle of lead zirconate having an extremely small particle size and a highly uniform particle size distribution. The lead zirconate particles are synthesized as crystalline particles without the necessity of special heat treatment for crystallization.

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