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Journal of Thermal Analysis and Calorimetry

, Volume 87, Issue 3, pp 747-751

First online:

Synthesis and characterization of Pb1–xLaxTiO3 nanocrystalline powders

  • A. MesquitaAffiliated withInstituto de Física de São Carlos, Universidade de São Paulo Email author 
  • , M. I. B. BernardiAffiliated withInstituto de Física de São Carlos, Universidade de São Paulo
  • , L. J. Q. MaiaAffiliated withInstituto de Física de São Carlos, Universidade de São Paulo
  • , V. R. MastelaroAffiliated withInstituto de Física de São Carlos, Universidade de São Paulo

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Abstract

Pb1–xLaxTiO3 (PLT) nanocrystalline powders were obtained by polymeric precursor method. The samples were analyzed by differential scanning calorimetry (DSC) and thermogravimetry (TG) techniques to characterize properly the distinct thermal events occurring during synthesis. The X-ray diffraction patterns show a tetragonal structure for the samples with x=0.10 and 0.15. An increase of the lanthanum concentration to x=0.20 led to a highly symmetric structure, cubic on average. The powders obtained at the end of the synthesis had an average particle size of 30 to 70 nm.

Keywords

nanocrystalline powders Pb1–xLaxTiO3 polymeric precursors