AN ACETIC-ACID WATER-BASED SOL-GEL PZT PROCESS .2. FORMATION OF A WATER-BASED SOLUTION

The chemical reactions underlying the formation of a water based alkox ide sol gel process for lead zirconate titanate thin films using solut ions of Ti and Zr alkoxides are outlined. Titanium isopropoxide and zi rconium propoxide are chemically modified by acetic acid in order to u se water as a solvent. The nature of the hydrolysis reactions in the p resence of acetic acid is reviewed. It is shown that the formation of ions and charged polymeric species reduces their rates of condensation and aggregation.