Abstract

BAMENTOS-HERNANDEZ, F. R.; ARENAS-FLORES, A.  and  CARDOSO-LEGORRETA, E.. Síntesis y caracterización de BaTiO₃ dopado con Nb⁵⁺ mediante el mecanismo BaTi_1-5xNb_4xO₃. Superf. vacío [online]. 2010, vol.23, n.3, pp.10-14. ISSN 1665-3521.

We investigated the effect of doping of Nb⁵⁺ in the B site of perovskite structure of BaTiO₃ through the mechanism BaTi_1-5xNb_4xO₃; with x=0.5, 4.0, 8.0, 20 and 25% Nb⁵⁺. The powders were prepared by the solid state route in PET containers with alumina ball mill for 3 hours, recovered by filtration and were carried a complete decarbonation at 1000 °C for 5 hours. Subsequently sintered at different temperatures up to 1500 °C. The sintered powders were uniaxially pressed to obtain pellets of approximately 10 mm in diameter; which were sintered at 1500 °C for 5 hours in air; characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD) and electrical measurements. The main objective is to estimate values of permittivity for possible application in capacitors.

Keywords : Barium Titanate; Perovskite; Ferroelectric; paraelectric; dopant; Pellet.

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