Physical Properties of New, Lead Free BaTi1-x(Nb0.5Yb0.5)xO3 Ceramics

被引：16
作者：
Abdelkafi, Z. [1 ]
Abdelmoula, N. [1 ]
Khemakhem, H. [1 ]
Simon, A. [2 ]
Maglione, M. [2 ]
机构：
[1] Fac Sci Sfax, Lab Mat Ferroelect, Sfax 3018, Tunisia
[2] Univ Bordeaux 1, CNRS, Inst Chim Mat Condensee Bordeaux, F-33608 Pessac, France
来源：
FERROELECTRICS | 2008年 / 371卷
关键词：
Dielectric properties; ferroelectric; ytterbium; relaxor; Piezoelectric;
D O I：
10.1080/00150190802385101
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
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 0.1) and relaxor ferroelectric behaviour (0.1 0.2). BaTi0.9(Nb0.5Yb0.5)0.1O3 specimen present a relaxor behaviour at a temperature close to room with high permittivity ('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.
引用
收藏
页码：48 / 55
页数：8
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