The effects of polarization on the crystallization of calcium phosphate are studied in thin. work. Crystals of calcium phosphate from saturated solution of hydroxyapatite (HA. Ca-10(PO4)(6)(OH)(2)) were deposited on the surfaces of ferroelectric ceramics lead zirconate titanium (Pb(Ti,Zr)O-3. PZT). The results of the experiment demonstrated the acceleration effects of polarized PZT on the crystal growth of calcium phosphate. Furthermore, it is indicated that polarization also influenced the orientation of the deposited crystals due to the growth of a layer of (002) oriented octacalcium phosphate (OCP, Ca8H2(PO4)(6).5H(2)O) on the negatively charged surfaces of PZT. (C) 2002 Elsevier Science B.V. All rights reserved.