ABDELKAFI, Z.; ABDELMOULA, Najmeddine; KHEMAKHEM, Hamadi; SIMON, Annie; MAGLIONE, Mario

doi:10.1080/00150190802385101

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ABDELKAFI, Z.
Laboratoire des Matériaux Ferroélectriques [LMF]

ABDELMOULA, Najmeddine
Laboratoire des Matériaux Ferroélectriques [LMF]

KHEMAKHEM, Hamadi
Laboratoire des Matériaux Ferroélectriques [LMF]

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Ferroelectrics. 2008, vol. 371, n° 1, p. 48-55

Taylor & Francis: STM, Behavioural Science and Public Health Titles

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New lead free ceramics derived from the ferroelectric material BaTiO3 by substituting Ti4 + by Nb5 + and Yb3 +. The dielectric and ferroelectric properties were studied. The compositions BaTi1 - x(Nb0.5Yb0.5)xO3 display a classical ferroelectric (0 ≤ x < 0.1) and relaxor ferroelectric behaviour (0.1 ≤ x ≤ 0.2). BaTi0.9(Nb0.5Yb0.5)0.1O3 specimen present a relaxor behaviour at a temperature close to room with high permittivity (ε'r = 9500 at 1 kHz), which opens the way for possible use of it for capacitor applications. The polarisation hysteresis loops were observed of relaxor BaTi0.875(Nb0.5Yb0.5)0.125O3 specimen. The ceramic BaTi0.9(Yb0.5Nb0.5)0.1O3 provides a piezoelectric constant d31 of about 11.17 pC/N near room temperature.< Leer menos

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Physical properties of new, lead free BaTi<sub>1-x</sub>(Nb<sub>0.5</sub>Yb<sub>0.5</sub>)<sub>x</sub>O<sub>3</sub> ceramics

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