Dielectric, pyroelectric and piezoelectric properties in the (1-x)(0.1BaTiO3-0.9NaNbO3)-xLiNbO3 system

被引：1

作者：

Benabdallah, F. ^{[1
,2
]}

Aydi, A. ^{[1
]}

Abdelmoula, N. ^{[1
]}

Khemakhem, H. ^{[1
]}

Simon, A. ^{[2
]}

Von Der Muehll, R. ^{[2
]}

Maglione, M. ^{[2
]}

机构：

[1] Univ Sfax, Lab Mat Ferroelect, UR 05 UR 15 04, Fac Sci Sfax, Sfax 3000, Tunisia

[2] Univ Bordeaux, CNRS, ICMCB, F-33608 Pessac, France

来源：

SOLID STATE SCIENCES | 2012年 / 14卷 / 09期

关键词：

Dielectric; Pyroelectric; Piezoelectric; LEAD-FREE PIEZOCERAMICS; CERAMICS; TRANSITION;

D O I：

10.1016/j.solidstatesciences.2012.07.010

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

New lead free piezoceramics with the given compositions (1 - x)(0.1BaTiO(3)-0.9NaNbO(3))-xLiNbO(3) (0.01 <= x <= 0.125) were prepared by solid-state reaction technique. XRD patterns revealed a single perovskite-structured phase only for 0.01 <= x <= 0.05. The dielectric, pyroelectric and piezoelectric responses were investigated for compositions with x = 0.01 and 0.02. For both compositions, epsilon'(r) exhibited a sharp peak with no frequency dependence (classical ferroelectrics). Losses displayed a strong dispersion at low frequencies in the paraelectric phase which was attributed to Li ionic conductivity in these compositions. The spontaneous polarization was found to be 35 and approximate to 22 mu C cm(-2) for x = 0.01 and 0.02 respectively. The transverse piezoelectric coefficient d(31) measured for x = 0.01 reached value of 37 pC/N at room temperature while the planar coupling factor was about 0.23. (C) 2012 Elsevier Masson SAS. All rights reserved.

引用

页码：1333 / 1337

页数：5

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