Determination of electrical properties of BaTiO3 doped with Gd3+
Keywords:
Electrocermics, Gd3, Doped, Relative permittivity
Abstract
BaTiO3 electroceramics doped with Gd3+ (Ba1-xGdxTi1 / 4O3) were synthesized using solid state reaction metod with x = 0.001, 0.005, 0.05 and 0.25, Gd3+ (wt%). The powders precursor mixtures were decarbonated at 900 °C for 12 hours and then sintered at 1400 °C for 8 hours. The results obtained by XRD revealed the predominantly tetragonal BaTiO3 phase. Capacitance of pellets sintered was measured 1 kHz of frecuency; these values allowed to calculate the relative permittivity (e) of electroceramics, in which a decrease of (e) with increasing Gd3 +, and a decrease in the Curie temperature (Tc) was observed. The results of SEM-EDS of the sintered material showed a uniform microstructure constituted by acicular range particles.
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References
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[3] W. D. Kingery: Introduction to Ceramics, John Wiley & Sons, New York, 1960.
[4] Brozozowski E., Castro M.S.: J. Eur. Ceram. Soc., 2000, vol. 20, pp. 2347-2351.
[5] D. M. Smyth: The Defect Chemistry of Metal Oxides, Oxford University Press, 2000.
[6] L. M. Levinson: Electronic Ceramics, Marcel Dekker Inc, NY, 1988.
[7] H. Yanagida: The Chemistry of Ceramics, John Wiley & Sons, Tokyo, 1996.
[8] R. C. Buchanan: Ceramic Materials for Electronics; Processing, Properties and Applications, second edition, Urbana Illinois, pp. 47-49. 1998
[9] M. Kahn: J. Amer. Ceram. Soc., 1971, vol. 54, pp.455-457.
[10] H. M. Chan: J. Am. Ceram. Soc., 1988, vol. 69 (6) pp.507-10.
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Published
2016-09-30
How to Cite
Hernández-Lara, J. P., Pérez-Labra, M., Barrientos-Hernández, F. R., Romero-Serrano, J. A., Ávila-Dávila , E. O., Pandiyan Thangarasu, P., & Hernández-Ramirez, A. (2016). Determination of electrical properties of BaTiO3 doped with Gd3+. Tópicos De Investigación En Ciencias De La Tierra Y Materiales, 3(3), 198-204. https://doi.org/10.29057/aactm.v3i3.9632
Section
Articles
