Abstract
Sol-gel processing has been widely used for the fabrication of lead zirconate titanate (PZT) thin films. To successfully and consistently make high quality thin films for different applications, we must develop a fundamental understanding of the structures of the sols. In this study, the characters of lead titanate (PT) and lead zirconate (PZ)sols were studied by measuring the rheological properties and particle sizes in them and comparing their behaviours. The average particle sizes in unhydrolysed PT, PZ and PZT sols are 11.5, 1.0, and 6.0 nm, respectively. PT sol has the highest rate of hydrolysis. It gels at about 24 h after hydrolysis. PZ and PZT sols have a quite similar feature in hydrolysis. The reasons for the differences in the hydrolysis behaviour of the different types of sol are discussed in terms of a model which indicates that the inhomogeneous sols consist of 5 to 6 nm PT particles surrounded by much smaller PZ particles, which tend to dominate the sol behaviour.
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C.T. Lin, B.W. Scanlan, J.D. Mcnell, J.S. Webb, and L. Li, J. Mater. Res. 7, 2546 (1992).
S. Yokoyama, Y. Ito, K. Ishihara, K. Hamada, S. Ohnishi, J. Kudo, and K. Sakiyama, Jpn. J. Appl. Phys. 34, 767 (1995).
N. Neumann, R. KÖhler, and G. Hofmann, Integrated Ferroelectrics 6, 213 (1995).
D.L. Polla and P.J. Schiller, Integrated Ferroelectrics 7, 359 (1995).
R.W. Whatmore, P. Kirby, A. Patel, N.M. Shorrocks, T. Bland, and M. Walker, “Ferroelectric thin films for capacitor and sensor applications,” Proc. NATO advanced Research Workshop on Science and Technology of Electroceramic Thin Films, edited by O. Guciello and R. Waser, Villa del Mare, Italy, June 20–24th, 1994, pp. 383–397, ISBN 0-7923-3332-2 (Kluwer Academic Publishers, Dordrecht, The Netherlands).
R.W. Schwartz, B.C. Bunker, D.B. Dimos, R.A. Assink, B.A. Tuttle, D.R. Tallant, and I.A. Weinstock, Proc. 3rd Int. Symp. Integ. Ferroelect. (Colorado Springs, CO, 1992), p. 535.
R.W. Schwartz, R.A. Assink, and T.J. Headley, in Ferroelectric Thin Films II, edited by G.I. Kingon, E.R. Myers, and B. Tuttle (Mater Res. Soc. Symp. Proc. 243, Pittsburgh, PA 1992), p. 245.
G. Yi, Z. Wu, and M. Sayer, J. Appl. Phys. 64(5), 2717 (1988).
J. Livage and C. Sanchez, J. Non-Cryst. Solids 145, 11 (1992).
H. Chen, K. Udayakumar, C. Gaskey, and L. Cross, J. Am. Ceram. Soc. 79(8), 2189 (1990).
D. Sporn, S. Merklein, W. Grond, S. Seifert, S. Wahl, and A. Berger, Microelectronic Eng. 29, 161 (1995).
Y.L. Tu, M.L. Calzada, N.J. Phillips, and S.J. Milne, J. Am. Ceram. Soc. 79(2), 441 (1996).
Q. Zhang, M.E. Vickers, A. Patel, and R.W. Whatmore, J. SolGel Sci. & Tech. 11, 141 (1998).
C.G. Vonk, J. Appl. Cryst. 8, 341 (1975).
M.L. Huggins, J. Am. Chem. Soc. 64, 2716 (1942).
A. Einstein, Ann. Phys. 19, 289 (1906).
C. Sanchez, J. Livage, M. Henry, and F. Babonneau, J. NonCryst. Solids 100, 65 (1987).
P.I. Laaziz, A Larbot, C. Guizard, J. Durand, and L. Cot, Acta Cryst. 46, 2332 (1990).
S. Doeuff, Y. Dromzee, F. Taulelle, and C. Sanchez, Inorg. Chem. 28, 4439 (1989).
L. Spiccia, B.O. West, and Q. Zhang, Polyhedron 17(11/12), 1851 (1998).
P. Löbmann, W. Glaubitt, J. Gross, and J. Fricke, J. Non-Cryst. Solids 186, 59 (1995).
D. Peter, T.S. Ertel, and H. Bertagnolli, J. of Sol-gel Sci. & Technol. 5, 5 (1995).
G. Yi and M. Sayer, J. of Sol-gel Sci. & Technol. 6, 65 (1996).
L.G. Hubert-Pfalzgraf, S. Daniele, R. Papiernik, M.C. Massiani, B. Septe, J. Vaissermann, and J.C. Daran, J. Mater. Chem. 7(5), 753 (1997).
G.D. Fallon, L. Spiccia, B.O. West, and Q. Zhang, J. of Sol-gel Sci. and Technol, 1998, submitted.
L. Ma and D.A. Payne, Chem. Mater. 6, 875 (1994).
C.J. Brinker and G.W. Scherer, Sol-gel Science: The Physics and Chemistry of Sol-Gel Processing, Chap. 3 (Academic Press, 1990).
D.W. Schaefer, J.E. Martin, and K.D. Keefer, Physics of Finely Matter, edited by N. Bocarra and M. Daoud (Springer-Verlag, Berlin, 1985), p. 31.
A. Guinier, Ann. Phys. 12, 161 (1939).
C. Chen, D.F. Ryder, and W.A. Spurgeon, J. Am. Ceram. Soc. 72, 1495 (1989).
T.W. Dekleva, J.M. Hayes, L.E. Cross, and G.L. Geoffroy, J. Am. Ceram. Soc. 71, C-280-C-282 (1988).
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Zhang, Q., Whatmore, R. & Vickers, M. A Comparison of the Nanostructure of Lead Zirconate, Lead Titanate and Lead Zirconate Titanate Sols. Journal of Sol-Gel Science and Technology 15, 13–22 (1999). https://doi.org/10.1023/A:1008759520087
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DOI: https://doi.org/10.1023/A:1008759520087