Effect of Sintering Temperature on Electrical Properties of SFN Ceramics Doped with Al Prepared by a Solid-State Reaction Technique

Abstract:

In the present work, strontium iron niobate SrFe_0.5Nb_0.5O₃ ceramics doped with aluminum were synthesized by a solid-state reaction technique. Phase formation investigation by X-ray diffraction technique (XRD) revealed that all ceramics exhibited pure perovskite phase with orthorhombic symmetry. Grain size observed by electron microscopy (SEM) was found to increase with increasing sintering temperature. The electrical properties and related parameters of the ceramics were also measured. The ceramics exhibit very good dielectric behavior and have a significant potential for dielectric applications.

• Periodical: Key Engineering Materials (Volumes 675-676)
• Pages: 527-530
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.675-676.527
• Online since: January 2016
• Authors: Thanatep Phatungthane*, Kachaporn Sanjoom, Denis Russell Sweatman, Buagun Samran, Chamnan Randorn, Gobwute Rujijanagul
• Keywords: Ceramic, Dielectric Properties, Sintering, SrFe_0.5Nb_0.5O₃

References

[1] I. M. Reaney, J. Petzelt, V. V. Voitsekhovskii, F. Chu, N. Setter, B site order and infrared reflectivity in A(B'B")O3 complex perovskite ceramics, J. Appl. Phys. 76 (1994) 2086-(2092).

DOI: 10.1063/1.357618

[2] I. P. Raevski, S. A. Prosandeev, A. S. Bogatin, M.A. Malitskaya, L. Jastrabik, High dielectric permittivity in AFe1/2B1/2O3 nonferroelectric perovskite ceramics (A = Ba, Sr, Ca; B = Nb, Ta, Sb), J. Appl. Phys. 93 (2003) 4130-4136.

DOI: 10.1063/1.1558205

[3] K. Sanjooma, T. Tunkasiria, K. Pengpata, S. Eitssayeama, G. Rujijanagul, Dielectric properties of strontium iron holmium niobate ceramics, Ceram. Int. 39 (2013) S227-S231.

DOI: 10.1016/j.ceramint.2012.10.067

[4] N. Charoenthai, R. Traiphol, G. Rujijanagul, Microwave synthesis of barium iron niobate and dielectric properties, Mater. Lett. 62 (2008) 4446-4448.

DOI: 10.1016/j.matlet.2008.07.047

[5] Y. Y. Liu, X. M. Chen, X. Q. Liu, L. Li, Giant dielectric response and relaxor behaviors induced by charge and defect ordering in Sr(Fe1/2Nb1/2)O3 ceramics, Appl. Phys. Lett. 90 (2007) 192905.

DOI: 10.1063/1.2737905

[6] S. Ke, H. Huang , H. Fan, Relaxor behavior in CaCu3Ti4O12 ceramics, Appl. Phys. Lett. 89 (2006) 182904.

DOI: 10.1063/1.2374682

[7] S. Saha, T. P. Sinha, Low-temperature scaling behaviour of BaFe0. 5Nb0. 5O3, Phys. Rev. B. 65 (2002) 134103.

[8] W. H. Jung, J. H. Lee, J. H. Sohn, H. D. Nam, S. H. Cho, Dielectric loss anomaly in Ba(Fe1/2Ta1/2)O3 ceramics, Mater. Lett. 56 (2002) 334-338.

DOI: 10.1016/s0167-577x(02)00478-0

[9] B. Fang, Z. Cheng, R. Sun, C. Ding, Preparation and electrical properties of (1 - x)Sr(Fe1/2Nb1/2)O3-xPbTiO3 ferroelectric ceramics, J. Alloy. Comp. 471 (2009) 539-543.

DOI: 10.1016/j.jallcom.2008.04.056

[10] Z. Wang, X. M. Chen, X. Q. Liu, Ba[(Fe0. 9Al0. 1)0. 5Ta0. 5]O3 ceramics with extended giant dielectric constant step and reduced dielectric loss, J. Appl. Phys, 105 (2009) 034114.

DOI: 10.1063/1.3077275

[11] T. Phatungthane, G. Rujijanagul, Dielectric properties of (1-x)SrFe1/2Nb1/2O3-xBaZn1/3Ta2/3O3 ceramics, Electron. Mater. Lett. 9 (2013) 485-488.

DOI: 10.1007/s13391-013-0036-y

[12] U. Intatha, S. Eitssayeam, J. Wang, T. Tunkasiri, Impedance study of giant dielectric permittivity in BaFe0. 5Nb0. 5O3 perovskite ceramic, Curr. App. Phys. 10 (2010) 21-25.

DOI: 10.1016/j.cap.2009.04.006