Structural and Electrical Properties of BNT-BT0.08 Ceramics Processed by Spark Plasma Sintering
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Structural and Electrical Properties of BNT-BT0.08 Ceramics Processed by Spark Plasma Sintering

Authors: Ciceron Berbecaru, Marin Cernea, Gheorghe Virgil Aldica, Roxana Trusca


(Bi0.5Na0.5)TiO3 doped with 8 mol % BaTiO3 powder (BNT-BT0.08), prepared by sol-gel method was compacted and sintered by Spark Plasma Sintering (SPS) process. The influence of SPS temperature on the densification of BNT-BT0.08 ceramic was investigated. Starting from sol-gel nanopowder of BNT-BT containing 8 mol % BaTiO3 with an average particles size of about 30 nm, were obtained ceramics with density around 98 % of the theoretical density value when the SPS temperature used was about 850 °C. The average grain size of the resulting ceramics was 80 nm. The BNT-BT0.08 ceramic sample obtained by SPS method has shown good electric properties at various frequencies.

Keywords: (Bi0.5Na0.5)TiO3 doped with BaTiO3, Spark PlasmaSintering (SPS), dielectric properties

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[1] G.O. Jones, P.A. Thomas, Investigation of the structure and phase transitions in the novel A-site substituted distorted perovskite compound Na0:5Bi0:5TiO3, Acta Crystallographica Section B, 58 (2), (2002)168-178.
[2] I. Pronin, P. Syrnikov, V. Isupov, V. Egorov, N. Zaitseva, Peculiarities of phase transitions in sodium-bismuth titanate, Ferroelectrics, 25 (1), (1980) 395-397.
[3] X. Wang, H.L.W. Chan, C.L. Choy, (Bi1/2Na1/2)TiO3-Ba(Cu1/2W1/2)O3 lead-free piezoelectric ceramics, J. Am. Ceram. Soc., 86 (10), (2003)1809-1811.
[4] Y. Hiruma, K. Yoshii, H. Nagata, T. Takenaka, Phase transition temperature and electrical properties of ÔÇ×Bi1/2Na1/2TiO3-ÔÇ×Bi1/2A1/2TiO3 ÔÇ×A=Li and K lead-free ferroelectric Ceramics, J. of Appl. Phys. 103, (2008) 084-121.
[5] C. Berbecaru, L. Nedelcu, A. Ioachim, M. Toacsan, M.G. Banciu, I. Pasuk, H.V. Alexandru, Synthesis and dielectric characterization of Ba0.6Sr0.4TiO3 ferroelectric ceramics, Thin Solid Films 519 (2011) 5811- 5815.
[6] A. V. Polotay, A. V. Ragulya, C. A. Randall, Ferroelectrics, 288: 93- 102, (2003), Preparation and Size Effect in Pure Nanocrystalline Barium Titanate Ceramics.
[7] M. Cernea, E. Andronescu, Roxana Radu, F. Fochi, Carmen Galassi, Sol-gel synthesis and characterization of BaTiO3-doped (Bi0.5Na0.5)TiO3 piezoelectric ceramics, Journal of Alloys and Compounds 490 (2010) 690-694.
[8] T.Takenaka, K. Maruiama, K. Sakata, (Bi1/2,Na1/2)-BaTiO3 System for Lead-Free Piezoelectric Ceramics, Jpn. J. of Appl. Phys., 30 (9B) (1991) 2236-2239.
[9] C. Ma, X. Tan, E. Dulkin, M. Roth, Domain structure-dielectric property relationship in lead-free (1−x)Bi1/2Na1/2TiO3AxBaTiO3 ceramics, J. of Appl. Phys. 108, (2010) 104-105.
[10] A. A. Bokov and Z.-G. Ye, Recent progress in relaxor ferro- electrics with perovskite structure, J. Mater. Sci. 41, (2006) 31-52.
[11] L. E. Cross, Relaxor Ferroelectrics ,Ferroelectrics 76, (1987) 241-267.