Effect of Ni doped BaTiO3 on the dielectric properties in the Ba(Ni1/3Nb2/3)xTi1―xO3 solid solution

• Published in: Journal of alloys and compounds Vol. 481; no. 1-2; pp. 559 - 562
• Main Authors: BOUJELBEN, Faiza, BAHRI, F, BOUDAYA, C, MAALEJ, A, KHEMAKHEM, H, SIMON, A, MAGLIONE, M
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier 29.07.2009
• Subjects: Chemical Sciences; Condensed matter: electronic structure, electrical, magnetic, and optical properties; Dielectric properties of solids and liquids; Dielectrics, piezoelectrics, and ferroelectrics and their properties; Exact sciences and technology; Ferroelectricity and antiferroelectricity; Material chemistry; Permittivity (dielectric function); Physics; Cubic lattices; Inorganic compounds; Dielectric properties; Transition element compounds; Niobates; Titanates; Perovskites; XRD; Relaxor; Dielectric; Ferroelectric; Perovskite; Ferroelectricity; Solid solutions; Sintering; Solid state reaction; Ceramic; Permittivity
• ISSN: 0925-8388; 1873-4669
• DOI: 10.1016/j.jallcom.2009.03.081

New ferroelectric ceramics of ABO3 perovskite type were synthesized in the Ba(Ni1/3Nb2/3)xTi1−xO3 (0 ≤ x ≤ 0.2) system by solid state reaction technique. The effect of the replacement of titanium by nickel and niobium in the B site on structural and dielectric properties was investigated. For this, we have use X-ray diffraction and dielectric characterizations. Samples in cubic phase were generally obtained with a sintering temperature of 1350 °C. Dielectric measurements revealed that the very small change in composition by the substitution of titanium by nickel and niobium in the BaTiO3 has a strong influence on the dielectric proprieties: fast decreasing of TC or Tm (for BaTiO3 TC = 340 K, for x = 0.06, TC = 270 K and for x = 0.16, Tm = 150 K). The evolution from classic ferroelectric behavior for (0 ≤ x < 0.1) to relaxor behavior for (0.1 ≤ x ≤ 0.2) is emphasized.