Preparation and Characterization of Different Metal Modified BaTiO₃ Powders

Abstract:

BaTiO3 powders modified with Sm, La, Cu, Al, Zn were prepared by solid doping and gaseous penetration method and their components, structure, superficies and electric properties were characterized. The results show that the resistivity of the modified powders is decreased after both solid doping and gaseous penetration, and it is more obviously after gaseous penetration. Among all the metals being discussed, Sm has the most significant influence on decreasing the resistivity of modified powders. The room temperature resistivity of Sm-penetrated BaTiO3 powders is the lowest, which decreases from 8.3×1010Ω•m (pure BaTiO3 powders) to 1.65×105Ω•m. SEM investigation illustrates that the powders are in uniform grain size. No apparent pores and small grains are found. XRD analysis indicates that the doping process only leads to the changes of the peak width and intensity without new phases appearing, but characteristic peaks of Sm2TiO5, SmTiO3, and Ba10.37Sm17.08Ti36O108 can be detected after gaseous penetrated, which leads to the decrease of the resistivity of modified BaTiO3 powders.

• Periodical: Advanced Materials Research (Volumes 105-106)
• Pages: 342-344
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.105-106.342
• Online since: April 2010
• Authors: J.L. Li, S.E. Hao, C.Y. Wang, F.X. Kong, W. Wang
• Keywords: BaTiO₃, Conductive Powder, Gaseous Penetration, Solid Doping

References

[1] Y. Liu, S.J. Tian, H.N. Li, et al.: Hydrometallurgy of China. Vol. 89(2004), p.1.

[2] Y. Li and C.P. Wong: Materials Science and Engineering. Vol. 51(2006), p.1.

[3] V. Deshpande, A. Kshirsagar, S. Rane, et al.: Materials Chemistry and Physics. Vol. 93(2005), p.320.

[4] D.L. Yan, J.Q. Wu and Y. Zhang: Bulletin of the Chinese Ceramic Society. Vol. 27(2008), p.928.

[5] D.L. Yan: China Ceramics. Vol. 44(2008), p.13.

[6] D.L. Yang, Z.Y. Lu, Y. Zhong, et al.: J. Wuhan Univ. Technol. Vol. 21(2006), p.13.

[7] C. Yao, F.Q. Wu and X.P. Lin: Non-Metallic Mines. Vol. 4(2003), p.58.

[8] A.J. Moulson and J.M. Herbert: Electroceramics Materials Properties and Applications. (London, Chapman and Hall, 1990).

[9] J. Wei, J. Guan, J. Shi, et al.: Chinese Journal of Chemical Physics Vol. 16(2003), p.401.

[10] G. Liu, S. Ding, S. Li, et al.: Piezoelectectrics & Acoustooptics. Vol. 30(2008), p.78.

[11] C.F. Wang, J. Dai and K.Q. Liu: Mining and Metallurgical Engineering. Vol. 26(2006), p.74.

[12] S. Shirasaki, H. Yamamura and H. Haneda: J. Chem. Phys. Vol. 73(1980), p.4640.

[13] S.E. Hao, Y.D. Wei and X.R. Liu: Science in China, Ser.B. Vol. 33(2003), p.157.

[14] S.E. Hao and Y.D. Wei: J. Harbin Ins. Technology (New Series). Vol. 10(2003), p.388.

[15] S.E. Hao and Y.D. Wei: Materials Science and Technology. Vol. 12(2004), p.258.

[16] S.E. Hao, L. Sun, X. Liu, et al.: Journal of Functional Materials and Devices. Vol. 10(2004), p.408.

[17] S.E. Hao, Y.D. Wei and C. Kuang: Fine Chemicals. Vol. 19(2002), p.717 Fig. 2 SEM picture of Sm-doped BaTiO3 powders Fig. 3 SEM picture of Sm-penetrated BaTiO3 powders.