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Nanometric Pb1−xLaxTiO3 (x=0, 0.13 and 0.27) powders obtained by the polymeric precursor method

2007; Elsevier BV; Volume: 43; Issue: 4 Linguagem: Inglês

10.1016/j.materresbull.2007.05.005

1873-4227

José Hilton Gomes Rangel, Priscila da Costa Gonçalves, Marcelo Moizinho Oliveira, Maria Inês Basso Bernardi, E. Longo, L. E. B. Soledade, I. M. G. Santos, A. G. Souza,

Bone Tissue Engineering Materials

PLT (Pb1−xLaxTiO3, in which x = 0, 0.13 and 0.27) powders were successfully synthesized using the polymeric precursor method, based on the Pechini method. The polymeric precursors were calcined at temperatures ranging from 350 to 500 °C for 4 h. X-ray diffraction (XRD) showed the evolution of the crystalline phase starting from the amorphous precursor. Thermogravimetric analyses (TG) and differential thermal analyses (DTA) of the powder precursors showed the influence of the pH on the elimination of organic material. PLT powders have a tendency to form agglomerates, what can be verified by comparing the values of the average particle sizes obtained by Brunauer–Emmett–Teller method, BET (DBET) with the values of the average crystallite sizes obtained by XRD (DXRD).