Dielectric Properties of Low-Temperature Sintered Ba_0.6Sr_0.4TiO₃ Ceramics by Addition of Bi₂O₃-CuO Mixed Oxides

Abstract:

The effect of 9Bi2O3-CuO mixed oxides as sintering agent on sintering behaviors and dielectric properties of Ba0.6Sr0.4TiO3 (BST) ceramics were investigated. It was found that 9Bi2O3-CuO mixed oxides lowered the sintering temperature about 300°C and that highly denser BST ceramic pellets were obtained by sintering at 975oC with addition of 5.0-10.0wt% mixed oxides. For BST ceramics with 5.0wt% CB content sintered at 975°C, had a moderate dielectric constant (ε=1315), low dielectric loss (0.0067) and high tunability (36%) at dc electric field of 20kV/cm and at room temperature and at 10kHz.

• Periodical: Key Engineering Materials (Volumes 421-422)
• Pages: 61-64
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.421-422.61
• Online since: December 2009
• Authors: Hai Tao Jiang, Ji Wei Zhai, Jing Ji Zhang, Xi Yao
• Keywords: BST Ceramic, Dielectric Property, Sintering, Structure

References

[1] L.A. Knauss, J.M. Pond, S.J. Horwitz, and D.B. Chrisey, Appl. Phys. Lett., 69 (1996), p.25.

[2] Y. Zhi, A. Chen, R. Guo, and A.S. Bhalla: Appl. Phys. Lett., 81 (2002), p.1285.

[3] J. W. Zhai, X. Yao, X. G. Cheng, L. Y. Zhang, C. Haydn, Mater. Sci. Engin. B, 94 (2002), p.164.

[4] T. Hu, H. Jantunen, A. Deleniv, S. Leppavuori, and S. Gevorgian, J. Am. Ceram. Soc., 87 (2004), p.578.

[5] S. M. Rhim, S. Hong, H. Bak, and O. K. Kim, J. Am. Ceram. Soc., 83 (5) (2000), p.1145.

[6] E.M. Levin, C.R. Robbins, H.F. Murdie rMc. and M.K. Reser, Phase diagram for ceramics, Am. Ceram. Soc. (Westerville, OH, 1975), p.20.

[7] Z. Yu, C. Ang, J. Mater. Sci. 38 (2003), p.113.

[8] M. S. Kim, S. J. Jeong and J. S. Song, J. Am. Ceram. Soc. 90 (10) (2007), p.3338.

[9] H.C. Yu and Z. G. Ye, J. Appl. Phys. 103, 034114 (2008).

[10] H. Banno, Am. Ceram. Soc. Bull. 66 (1987), p.1332.

[11] V. Hornebecq, C. Huber, M. Maglione, M. Antonietti, and C. Elissalde, Adv. Funct. Mater. 14 (2004), p.899.

DOI: 10.1002/adfm.200305052

[12] A. Feteira, D. C. Sinclair, I. M. Reaney, Yoshitaka Somiya, and M. T. Lanagan, J. Am. Ceram. Soc. 87 (6) (2004), p.1082.

[13] M. Valant and D. Suvorov, J. Am. Ceram. Soc. 87 (7) (2004), p.1222. aE-mail: Hapzhai@mail. tongji. edu. cnH(Jiwei Zhai) Tel.: [phone]; Fax: [phone].