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Literature has reported the synthesis of barium calcium titanates by various synthesis methods such as solid state reaction, co-precipitation and polymer precursors. These compounds are usually obtained using calcium carbonate (CaCO3), barium carbonate (BaCO3) and titanium oxide as starting materials. This study investigated the effect of different starting reagents on the synthesis of Ba0.8Ca0.2TiO3 (BCT) by complex polymerization method (CPM). Two sets of starting precursors were used: titanium citrate, CaCO3 and BaCO3, and titanium citrate and Ba1-xCaxCO3 solid solution precursor. Samples were crystallized at a temperature range from 400 ℃ to 700 ℃ for different time. The obtained powders were characterized by X-ray diffraction (XRD), thermogravimetry (TG) and differential thermal analysis (DTA), and Raman and infrared spectroscopy. The infrared spectroscopy indicated that the chelation processes of Ba, Ca, Ti and CA ions are very similar. The results showed that the use of CaCO3 and BaCO3 or Ba1-xCaxCO3 solid solution as precursors does not affect the final properties of BCT powders obtained by CPM.


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Effect of different starting materials on the synthesis of Ba0.8Ca0.2TiO3

Show Author's information P. N. MEDEIROSaV. D. ARAÚJObA. P. A. MARQUEScR. L. TRANQUILINaC. A. PASKOCIMASaM. R. D. BOMIOaJ. A. VARELAdE. LONGOdF. V. MOTTAa( )
DEMAT, CT, UFRN, Av. Sen. Salgado Filho, 3000, CEP 59072-970 Natal, RN, Brazil
UACSA, UFRPE, BR 101 Sul, 5225, CEP 54510-000 Cabo de Santo Agostinho, PE, Brazil
UNIFESP, Rua Prof. Artur Riedel, 275, CEP 09972-270 Diadema, SP, Brazil
LIEC, IQ, UNESP, Rua Francisco Degni s/n, CEP 14801-907 Araraquara, SP, Brazil

Abstract

Literature has reported the synthesis of barium calcium titanates by various synthesis methods such as solid state reaction, co-precipitation and polymer precursors. These compounds are usually obtained using calcium carbonate (CaCO3), barium carbonate (BaCO3) and titanium oxide as starting materials. This study investigated the effect of different starting reagents on the synthesis of Ba0.8Ca0.2TiO3 (BCT) by complex polymerization method (CPM). Two sets of starting precursors were used: titanium citrate, CaCO3 and BaCO3, and titanium citrate and Ba1-xCaxCO3 solid solution precursor. Samples were crystallized at a temperature range from 400 ℃ to 700 ℃ for different time. The obtained powders were characterized by X-ray diffraction (XRD), thermogravimetry (TG) and differential thermal analysis (DTA), and Raman and infrared spectroscopy. The infrared spectroscopy indicated that the chelation processes of Ba, Ca, Ti and CA ions are very similar. The results showed that the use of CaCO3 and BaCO3 or Ba1-xCaxCO3 solid solution as precursors does not affect the final properties of BCT powders obtained by CPM.

Keywords:

ceramic, synthesis, Ba0.8Ca0.2TiO3 (BCT), complex polymerization method (CPM)
Received: 14 September 2014 Revised: 28 October 2014 Accepted: 29 October 2014 Published: 31 January 2015 Issue date: March 2015
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Publication history

Received: 14 September 2014
Revised: 28 October 2014
Accepted: 29 October 2014
Published: 31 January 2015
Issue date: March 2015

Copyright

© The author(s) 2015

Acknowledgements

The authors thank the financial support of the Brazilian research financing institutions: CNPq, CAPES and FAPESP-CDMF 2013/07296-2.

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