Molten Salts Synthesis of Relaxor Ferroelectrics PMN-PT Powders


Article Preview

Pb(Mg1/3Nb2/3)O3-PbTiO3 (PMN-PT) solid solutions with composition near the morphotropic phase boundary (MPB) (33mol% PT) were successfully synthesized by the molten salt synthesis (MSS) method at 800°C for 30min using Li2SO4-Na2SO4 and NaCl-KCl molten salts as a medium of reaction, respectively. The influences of processing parameters, such as temperature, time, and type of salts, on the formation and the micrographs characteristics of the PMN-PT powders were discussion. It was found that the PMN-PT powder obtained by the MSS method has a relatively uniform size distribution and a better dispersivity of particle, and an average size of PMN-PT particles with smooth surface was around 0.3∼0.5 μm. With other conditions being kept same, chloride molten salt is more propitious to the formation of PMN- PT solid solutions, and improving the compositional homogeneity of PMN-PT powders.



Key Engineering Materials (Volumes 336-338)

Edited by:

Wei Pan and Jianghong Gong




S. X. Zhao et al., "Molten Salts Synthesis of Relaxor Ferroelectrics PMN-PT Powders", Key Engineering Materials, Vols. 336-338, pp. 10-13, 2007

Online since:

April 2007




[1] K. Uchino, S. Nomur, L.E. Cross: J. Mater. Sci. Vols. 16 (1981) p.569.

[2] S. Nomura and K. Uchino: Ferroelectrics. Vols. 41 (1982) p.117.

[3] T.R. Shrout, Z.P. Chang, N. Kim: Ferroelectrics Letters. Vols. 12 (1990) p.63.

[4] J.C. Ho, K. S. Liu, I. N. Lin: Journal of Materials Science, Vols. 28 (1993) p.4497.

[5] R. F. Service: Science. Vols. 275 (1997) p.1878.

[6] N. Wakiya, K. Shinozaki, N. Mizutani, N. Ishizawa: J. Am. Ceram. Soc. Vol. 80 (1997), p.3217.

[7] S. L Swartz, T. R. Shrout: Mater. Res. Bull. Vol. 17(1982) p.1245.

[8] J.W. Zhai, B. Shen, L. Y Zhang, X. Yao: Mater. Chem. Phys. Vol. 64 (2000) p.1.

[9] C. H Li, Q. Li, F. B. Song, S.X. Zhao, D. Z. Shen: J. Mater. Sci. Lett. Vols. 40 (2005) p.2599.

[10] K. H. Yoon, Y.S. Cho, D.H. Lee: J. Am. Ceram. Soc., Vols. 76 (1993) p.1373.

[11] K. H. Yoon, Y.S. Cho, D. H. Kang: J. Mater. Sci., Vols. 33 (1998), p.2977.

[12] S. X. Zhao, Q. Li, F. B. Song: Mater. Sci. Forum, Vols. 475-479 (2005) p.1153.

[13] Z. P Yang, S. R Zhou, S.B. Qu, B. Cui, C. S Tian: Ferroelectrics, Vols. 265 (2002) p.225.

[14] F. B Song: Ph. D Thesis. Tsinghua University, 2004. (Chinese).