Sintering and Electrical Properties of Tungsten Doped Pb(Zr_0.95Ti_0.05)O₃ Ferroelectric Ceramics

Abstract:

The effect of WO₃ additions on the sintering ability and electrical properties of Pb(Zr_0.95Ti_0.05)O₃ ferroelectric ceramics (PZT 95/5) was investigated. Pure and W-doped PZT 95/5 ceramics were prepared by the usual ceramic technique from raw oxides. The bulk density, microstructure, electrical properties of ceramics as a function of WO₃ content were characterized. The results showed that the WO₃ addition was benefit for the sintering densification of PZT, and the ceramics with 2.0 mol% WO₃ addition exhibited the maximum value for the density (7.8 g/cm³) at a sintering temperature of 1250 °C. Moreover, piezoelectric constant (d₃₃), relative dielectric constant (ε_r), dielectric loss (tanδ) and ferroelectric hysteresis loop of PZT 95/5 ceramics at the sintering temperature of 1250 °C all altered regularly with the change of WO₃ doping level, whose optimum values were all obtained by doping 2.0 mol% WO₃. The best values obtained for these parameters were: d₃₃ = 65 pC/N, ε_r = 314, tanδ = 0.028, P_r = 24.80 µC/cm² and E_c = 1890 V/mm, respectively. These results show that tungsten doped Pb(Zr_0.95Ti_0.05)O₃ ferroelectric ceramics can be hopefully used for the pulsed power devices.

• Periodical: Materials Science Forum (Volume 687)
• Pages: 380-384
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.687.380
• Online since: June 2011
• Authors: Jun Xia Wang, Xu Lan Zhen, Shi Yuan Yang, Jin Wang, Ke Tang
• Keywords: Electrical Properties, PZT 95/5 Ferroelectric Ceramic, Sintering, WO₃ Doping

References

[1] P. Yang, R.H. Moore, S.J. Lockwood, B.A. Tuttle, J.A. Voigt and T.W. Scofield, Sandia National Laboratories, Albuquerque, NM; 2003. Report No.: SAND2003-3866.

[2] E. Boucher, B. Guiffard, L. Lebrun and D. Guyomar: Ceram. Int. Vol. 32 (2006), p.479.

[3] H. Yang, A. Lyashchenko, X.L. Dong, C.H. Luo, C.L. Mao, S.T. Chen, T. Zeng and Y.L. Wang: Ceram. Int. Vol. 33 (2007), p.497.

[4] S.Y. Chu, T.Y. Chen, I.T. Tsai and W. Water: Sensor. Actuat. A. Vol. 133 (2004), p.198.

[5] X.M. Zong, Z.P. Yang, H. Li and M.B. Yuan: Mater. Res. Bull. Vol. 41 (2006), p.1447.

[6] M.A. Mohiddon, A. Kμmar and K.L. Yadav: Physica B Vol. 395 (2007), p.1.

[7] V. Singh, H.H. Kμmar, D.K. Kharat, S. Hait and M.P. Kulkarni: Mater. Lett. Vol. 60 (2006), p.2694.

[8] M. Laurent, U. Schreiner, P.A. Langjahr, A.E. Glazounov and M.J. Hoffmann: J. Eur. Ceram. Soc. Vol. 21 (2001), p.1495.

[9] D.M. Santos, A.Z. Simões, M.A. Zaghete, C.O. Paiva-Santos, J.A. Varela and E. Longo: Mater. Chem. Phys. Vol. 103 (2007), p.371.

[10] E. Dimitriu, R. Ramer, C. Miclea and C. Tnsoiu: Ferroelectrics Vol. 241 (2000), p.207.

[11] F. Gao, C.J. Wang, X.C. Liu and C.S. Tian: Ceram. Int. Vol. 33 (2007), p.1019.

[12] E.R. Nielsen, E. Ringgaard and M. Kosec. J. Eur. Ceram. Soc. Vol. 22 (2002), p.1847.