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Synthesis and thermal decomposition of SrTi1−x Fe x O3 (0.0 ≤ x ≤ 0.1) powders obtained by the polymeric precursor method

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Abstract

This work reports on the synthesis of a SrTi1−x Fe x O3 nanostructured compound (0.0 ≤ x ≤ 0.1) using a modified polymeric precursor method. The effect of the addition of iron on the thermal, structural and morphological properties of the nanoparticles was investigated by FT-IR spectroscopy, X-ray diffraction, and field emission scanning electron microscopy (FE-SEM). A thermogravimetric analysis indicated that the crystallization process preceded by three decomposition steps. Differential thermal analysis experiments showed that decomposition occurred in a broad range of temperatures from 400 to 600 °C. It was observed that iron ions acted as catalysts, promoting rapid organic decomposition and phase formation at a lower temperature than in SrTiO3. Moreover, the addition of iron decreased the crystallite size and increased the lattice parameter of the SrTi1−x Fe x O3 structure.

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Acknowledgements

The authors are indebted to Prof. Elson Longo for the use of the FE-SEM facility. We also gratefully acknowledge the Brazilian financing agencies FAPESP and CNPq for their financial support.

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Authors and Affiliations

  1. Instituto de Física de São Carlos – USP, São Carlos, SP, Brazil

    L. F. da Silva, M. I. B. Bernardi, G. J. M. Frigo & V. R. Mastelaro

  2. Instituto de Física, Universidade Federal de Goiás – UFG, Goiânia, GO, Brazil

    L. J. Q. Maia

Authors
  1. L. F. da Silva
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  2. M. I. B. Bernardi
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  3. L. J. Q. Maia
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  4. G. J. M. Frigo
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  5. V. R. Mastelaro
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Correspondence to V. R. Mastelaro.

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da Silva, L.F., Bernardi, M.I.B., Maia, L.J.Q. et al. Synthesis and thermal decomposition of SrTi1−x Fe x O3 (0.0 ≤ x ≤ 0.1) powders obtained by the polymeric precursor method. J Therm Anal Calorim 97, 173–177 (2009). https://doi.org/10.1007/s10973-009-0241-y

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