Effect of BiFeO3 additions on the dielectric and piezoelectric properties of (K0.44Na0.52Li0.04)(Nb0.84Ta0.1Sb0.06)O3 ceramics

被引：20

作者：

Jiang, Minhong ^{[1
,2
]}

Liu, Xinyu ^{[1
,2
]}

Liu, Chaoying ^{[2
]}

机构：

[1] Guilin Univ Elect Technol, Guangxi Key Lab Informat Mat, Guilin 541004, Guangxi, Peoples R China

[2] Cent S Univ, Coll Mat Sci & Engn, Changsha 410083, Peoples R China

来源：

MATERIALS RESEARCH BULLETIN | 2010年 / 45卷 / 02期

关键词：

Ceramics; Chemical synthesis; X-ray diffraction; Piezoelectricity; LEAD-FREE CERAMICS;

D O I：

10.1016/j.materresbull.2009.09.014

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

(1 - x) (K0.44Na0.52Li0.04)(Nb0.84Ta0.1Sb0.06)O-3 - x BiFeO3 (x = 0, 0.002, 0.004, 0.006, 0.008, 0.01) lead-free piezoelectric ceramics were prepared by the conventional ceramic processing. The compositional dependence of the phase structure and the electrical properties of the ceramics were studied. A morphotropic phase boundary between the orthorhombic and tetragonal phases was identified in the composition range of 0.004 < x < 0.006. The ceramics near the morphotropic phase boundary exhibit a strong compositional dependence and enhanced piezoelectric properties. The ceramics with 0.6 mol.% BiFeO3 exhibit good electrical properties (d(33) similar to 246 pC/N, k(p) similar to 43%, T-c similar to 285 degrees C, epsilon(r) similar to 1871, and tan delta similar to 1.96%). These results show that the (1 - x) (K0.44Na0.52Li0.04)(Nb0.84Ta0.1Sb0.06)O-3 - x BiFeO3 ceramic is a promising lead-free piezoelectric material for applications in different devices. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：220 / 223

页数：4

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