Synthesis, Microstructure and the Crystalline Structure of the Barium Titanate Ceramics Doped with Lanthanum

Open access

Abstract

In the present study BaTiO3 and Ba1-xLaxTiO3 (0.1-0.4mol.% La) ceramic powders were synthesized by the conventional mixed oxide method (MOM). The characterization of the ceramic powders was carried out using a simultaneous thermal analysis (STA), with a combined DTA/TG/DTG system (Netzsch STA409). The results of thermal analysis allowed to determine the optimal temperature of synthesis. Microstructure was investigated by scanning electron microscopy (SEM), crystalline structure was studied by X-ray diffraction method (XRD). The EDS investigations showed that samples exhibited conservation of stoichiometry according to the chemical composition formula. The X-ray diffraction analysis confirmed formation of the desired crystalline structure both pure and La3+-doped BaTiO3 ceramics exhibiting a perovskite-type structure ABO3 with tetragonal symmetry P4 mm.

[1] K. Cwikiel, E. Nogas- Cwikie l, Dielectric and pyroelectric properties of the Ba0:3Na0:7Ti0:3Nb0:7O3 ceramics obtained by sol-gel method, Phase Transitions 80, 141-146 (2007).

[2] Y. Xu, Ferroelectric materials and their applications, North Holland, New York, 1991.

[3] B. Wodecka- Dus, D. Czekaj, Własciwosci elektryczne modyfikowanej elektroceramiki na bazie tytanianu baru, Ceramika/Ceramics, 103, 1, 241-246 (2008).

[4] B.A. Boukamp, Solid State Ionics 169, 65 (2004).

[5] M.E.V. Costa, P.Q. Mantas, J. Euro. Ceram. Soc. 19, 1077-1080 (1999).

[6] H. Beltrn, E. Cordoncill o, P. Escriban o, D.C. Sinclair, A.R. West, J. Am. Ceram. Soc. 87, 2132-2134 (2004).

[7] B. Wodecka- Dus, D. Czekaj, Fabrication and dielectric properties of donor doped Ba Ti O3 ceramics, Archives of Metallurgy and Materials 54, 923-933 (2009).

[8] R.A. Young, (Ed)., The Rietveld Method, Oxford University Press, 1995.

Archives of Metallurgy and Materials

The Journal of Institute of Metallurgy and Materials Science and Commitee on Metallurgy of Polish Academy of Sciences

Journal Information


IMPACT FACTOR 2016: 0.571
5-year IMPACT FACTOR: 0.776

CiteScore 2016: 0.85

SCImago Journal Rank (SJR) 2016: 0.347
Source Normalized Impact per Paper (SNIP) 2016: 0.740

Cited By

Metrics

All Time Past Year Past 30 Days
Abstract Views 0 0 0
Full Text Views 185 123 5
PDF Downloads 79 60 3