Rhombohedral-Tetragonal Phase Coexistence and Piezoelectric Properties of (NaK)(NbSb)O3-LiTaO3-BaZrO3 Lead-Free Ceramics

被引：211
作者：
Zuo, Ruzhong [1 ]
Fu, Jian [1 ]
机构：
[1] Hefei Univ Technol, Sch Mat Sci & Engn, Inst Electro Ceram & Devices, Hefei 230009, Peoples R China
来源：
JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 2011年 / 94卷 / 05期
基金：
中国国家自然科学基金;
关键词：
TRANSITIONAL BEHAVIOR; TEMPERATURE; NIOBATE;
D O I：
10.1111/j.1551-2916.2010.04256.x
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The phase transitional behavior and composition-dependent piezoelectric properties of (NaK)(NbSb)O-3-LiTaO3-BaZrO3 (NKNS-LT-BZ) pseudo-ternary system were investigated. A composition-temperature phase diagram was generalized within a certain range of BZ content in which a rhombohedral-tetragonal (R-T) ferroelectric phase boundary connecting orthorhombic and cubic phase zones is formed near room temperature between two trifurcate points. Piezoelectric and electromechanical properties of NKNS-LT-BZ ceramics exhibit optimum values of d(33) = 365 pC/N and k(p) = 45% in the vicinity of the R-T phase coexistence zone. The dielectric and ferroelectric properties and the phase transition of NKNS-LT-BZ ceramics were discussed from a crystallographic point of view.
引用
收藏
页码：1467 / 1470
页数：4
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