Dielectric Properties and Raman Spectroscopy in Ca-Substituted Na0.5Bi0.5TiO3 Ferroelectric Ceramics


Article Preview

Lead free Na0.5Bi0.5TiO3 (NBT) and (Na0.5Bi0.5TiO3)1-x(CaTiO3)x (NBT-CT) piezoelectric ceramics with the perovskite structure were studied. The NBT and NBT-CT samples were synthesized using a solid-state reaction method and characterized with X-ray diffraction (XRD), Raman spectroscopy and dielectric measurements for several compositions (x = 0, 0.07, 0.15) at room temperature. The XRD analysis showed a stabilization of a rhombohedral phase at a low concentration of Ca (0 < x <0.15), whereas Raman spectra reveal a strong modification for the sample with x = 0.15. The dielectric properties of these ceramics were studied by measuring impedance in the 79-451K temperature range for unpoled and field cooling with an electric field (FC) conditions.



Edited by:

Maher Soueidan, Mohamad Roumié and Pierre Masri




R. J. Roukos et al., "Dielectric Properties and Raman Spectroscopy in Ca-Substituted Na0.5Bi0.5TiO3 Ferroelectric Ceramics", Advanced Materials Research, Vol. 324, pp. 298-301, 2011

Online since:

August 2011




[1] M. Otonicar, S.D. Skapin, M. Spreitzer, D. Suvorov: J. Eur. Ceramic Soc. 30 (2010), 971.

[2] V. Dorcet, G. Trolliard, P. Boullay: J. Magnetism and Magnetic Mat. 321 (2009), 1758.

[3] G. A. Smolenskii, V. A. Isupov, R. I. Agranovskaya, N. N. Kainik: Sov. Phys. Solid State 2 (1961) 2651.

[4] B. V. Bahuguna Saradhi, K. Srinivas, G. Prasad, S. V. Suryanarayana, T. Bhimasankaram: Mat. Sci. Eng. B 98 (2003), 10.

[5] B. -J. Chu, D. -R. Chen, G. -R. Li, Q. -R. Yin: J. Eur. Ceramic Soc. 22 (2002), 2115.

[6] S. Saïd, P. Marchet, T. Merle-Méjean, J. -P. Mercurio: Mat. Lett. 58 (2004), 1405.

[7] W. Ge, J. Yao, C. DeVreugd, J. Li, D. V., Q. Zhang, H. Luo: Solid State Communications. 151 (2011), 71-74.

[8] J. -R. Gomah-Pettry: Dielectric Properties and Phases Transitions of lead free Ferroelectrics Materials: Na0. 5Bi0. 5TiO3-MTiO3 (M = Ba, Sr, Ca). PhD thesis, Limoges University, France (2002).

[9] Y. Qu, D. Shan, J. Song: Materials Science and Engineering. B121 (2005), 148-151.

[10] S. P. Singh, R. Ranjan, A. Senyshyn, D. Trots and H. Boysen: J. Phys: Condens. Matter 21 (2009), 375902.

[11] J. R. Gomah Pettry, A. N. Salak, P. Marchet, V. M. Fereira, and J. P. Mercurio: Phys. Stat. Sol. 241 (2004), (1949).

DOI: https://doi.org/10.1002/pssb.200302020

[12] A. Watcharapasorn and S. Jiansirisomboon: Dielectric and Piezoelectric Properties of Zirconium-Doped Bismuth Sodium Titanate Ceramics (Trans Tech Publications, Switzerland 2008).

DOI: https://doi.org/10.4028/www.scientific.net/amr.55-57.133

[13] D. Rout, K. -S. Moon, S. -J. L. Kang, and I. W. Kim: J. of Appl. Phys. 108 (2010), 084102.