BOUJELBEN, Faiza; BAHRI, F.; BOUDAYA, Chokri; MAALEJ, A.; KHEMAKHEM, Hamadi; SIMON, Annie; MAGLIONE, Mario

doi:10.1016/j.jallcom.2009.03.081

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BOUJELBEN, Faiza
Laboratoire des Matériaux Ferroélectriques [LMF]

BAHRI, F.
Laboratoire des Matériaux Ferroélectriques [LMF]

BOUDAYA, Chokri
Laboratoire des Matériaux Ferroélectriques [LMF]

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Journal of Alloys and Compounds. 2009, vol. 481, n° 1-2, p. 559-562

Elsevier

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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.< Réduire

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Effect of Ni doped BaTiO<sub>3</sub> on the dielectric properties in the Ba(Ni<sub>1/3</sub>Nb<sub>2/3</sub>)<sub><i>x</i></sub>Ti<sub>1−<i>x</i></sub>O<sub>3</sub> solid solution

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