Title of article :
Nanometric Pb1−xLaxTiO3 (x = 0, 0.13 and 0.27) powders obtained by the polymeric precursor method
Author/Authors :
Rangel، نويسنده , , J.H.G. and Gonçalves Jr.، نويسنده , , P.R.G. and Oliveira، نويسنده , , M.M. and Bernardi، نويسنده , , M.I.B. and Longo، نويسنده , , Luiz E. B. Soledade، نويسنده , , L.E.B. and Santos، نويسنده , , I.M.G. and Souza، نويسنده , , A.G.، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2008
Abstract :
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).
Keywords :
B. Sol–gel chemistry , C. X-ray diffraction , C. thermogravimetric analysis (TGA) , A. Ceramics
Journal title :
Materials Research Bulletin
Journal title :
Materials Research Bulletin
