Electrical Properties of BNKTZ Ceramics as a Function of Calcination Temperature

Abstract:

In this research, the Bi_0.5(Na_0.80K_0.20)_0.5Ti_0.99Ti_0.10O₃ were prepared via a conventional solid-state reaction method, and their properties were related with calcination temperature. The crystalline structure of BNKTZ ceramics was assessed by X-ray diffraction (XRD) method. Other physical properties, i.e. porosity, density, microstructure, and electrical properties were determined. XRD patterns for all samples showed a pure perovskite, where coexistence between rhombohedral and tetragonal phases was observed for some conditions. The optimum dielectric constant was obtained for the ceramic calcined at 800 °C. The ferroelectric and piezoelectric properties were improved and showed the highest values for the calcination temperature around 900-1000°C. The improvements of ferroelectric and piezoelectric properties were proposed to be due to the ceramics had compositions closed to MPB composition. Furthermore, density also had a contribution for the improvements.

• Periodical: Materials Science Forum (Volume 872)
• Pages: 103-108
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.872.103
• Online since: September 2016
• Authors: Pichitchai Butnoi, Supalak Manotham, Pharatree Jaita, Ratabongkot Sanjoom, Denis Russell Sweatman, Gobwute Rujijanagul, Tawee Tunkasiri*
• Keywords: BNKTZ, Dielectric, Ferroelectric

References

[1] A. Hussain, W. Ahn, H.J. Lee, I.W. Kim, J.S. Lee, S.J. Jeong and S.K. Rout: Curr. Appl. Phys. Vol. 10 (2010), p.305–310.

[2] S.H. Shin, J.D. Han, J. Yoo: Mater. Lett. Vol. 154 (2015), p.120–123.

[3] S. Bhandari, N. Sinha, G. Raya and B. Kumar: Scripta Materialia Vol. 89 (2014), p.61–64.

[4] A. Ullah, C.W. Ahn, A. Hussain and I.W. Kim: Curr. App. Phys. Vol. 10 (2010), p. 1367e1371.

[5] G. A Smolensky, V.A. Isupov, R.I. Agranovskaya and N.N. Kainik: Sov. Phys. Solid State Vol 2. (1961), p.2651–2654.

[6] V.Q. Nguyen, H.S. Han, K.J. Kim, D.D. Dang, K.K. Ahn and J.S. Lee: J. Alloy. Comp. Vol. 511 (2012), p.237–241.

[7] W. Zhao, H. Zhou and Y. Yan: Mater. Lett. Vol. 62 (2008), p.1219–1222.

[8] P. Butnoi, N. Pisitpipathsin, P. Kantha, P. Bintachitt and K. Pengpat: Ferroelectrics Vol. 452 (2013) p.1–6.

DOI: 10.1080/00150193.2013.839293

[9] K.T. Lee, J.S. Park, J.H. Cho, Y.H. Jeong, J.H. Paik and J.S. Yun: Ceram. Int. 41 (2015), p.10298–10303.

[10] P.Y. Chen, C.S. Chen, C.C. Chou, T.Y. Tseng and H.D. Chen: Curr. Appl. Phys. Vol. 11 (2011), p. S110 - S119.

[11] A. Sasaki, T. Chiba, Y. Mamiya and E. Otsuki: Jpn. J. Appl. Phys. Part 1 Vol. 38 (1999), p.5564.

[12] P.Y. Chen, C.S. Chen, C.S. Tu and T.L. Chang: J. Eur. Ceram. Soc. Vol. 34 (2014), p.4223–4233.

[13] C.C. Jin, F.F. Wangn, Q.R. Yao, Y.X. Tang, T. Wang and W.Z. Shi: Ceram. Int. Vol. 40 (2014), p.6143–6150.

[14] P. Bomlai and P. Wichianrat: J. Am. Ceram. Soc. Vol. 90 (2007), 1655.

[15] P. Jaita, A. Watcharapasorn, N. Kumar, D.P. Cann And S. Jiansirisomboon: Mater. Lett., Vol. 11 No. 5 (2015), pp.828-835.