In¯uence of viscosity and ionic concentration on morphology of PLZT thin ®lms

PLZT thin ®lms were prepared by a dip-coating process using Pechiniʹs method. The PLZT solution was obtained from the mixture of the cation solutions. The viscosity of the solution was adjusted in the range of 20±40 cP, while the ionic concentration was adjusted in the range of 0.1 and 0.2 M. PLZT solutions were deposited on Si (1 0 0) substrate with withdrawal speed at 5 mm/min. The coated substrates were thermally treated with heating rate of 18C/min up to 300 and 58C/ min up to 6508C in order to obtain homogeneous and crack free ®lms. The in¯uence of viscosity and ionic concentration on crystallization and morphology of PLZT (9/65/35) thin ®lm will be discussed. # 2001 Elsevier Science B.V. All rights reserved.