PREPARATION OF PB(ZR(1-X)TI(X))O3 POWDERS FROM COMPLEX ALKOXIDE AND THEIR LOWER-TEMPERATURE CRYSTALLIZATION

Pb(Zr1-xTix)O3 (PZT) powders of 0.2-0.4-mu-m particle sizes could be obtained from the complex alkoxides synthesized from lead acetate, Zr(OBun)4, and Ti(OEt)4. The powders crystallized to well-crystalline perovskite phases at a temperature as low as 250-degrees-C, independent of the compositional ratio of the B site (Zr/Ti). For the preparation of powders, the complexing of alkoxides, addition of the second solvent such as acetone, acetonitrile, or methyl acetate, and base-catalyzed hydrolysis with ammonia water were essential.