Achieving Both Giant d33 and High TC in Patassium-Sodium Niobate Ternary System

被引：72

作者：

Cheng, Xiaojing ^{[1
]}

Wu, Jiagang ^{[1
]}

Lou, Xiaojie ^{[2
,3
]}

Wang, Xiangjian ^{[2
,3
]}

Wang, Xiaopeng ^{[1
]}

Xiao, Dingquan ^{[1
]}

Zhu, Jianguo ^{[1
]}

机构：

[1] Sichuan Univ, Dept Mat Sci, Chengdu 610064, Peoples R China

[2] Xi An Jiao Tong Univ, Multidisciplinary Mat Res Ctr, Frontier Inst Sci & Technol, Xian 710049, Peoples R China

[3] Xi An Jiao Tong Univ, State Key Lab Mech Behav Mat, Xian 710049, Peoples R China

来源：

ACS APPLIED MATERIALS & INTERFACES | 2014年 / 6卷 / 02期

基金：

美国国家科学基金会;

关键词：

lead-free piezoelectrics; ternary system; R-T phase boundary; piezoelectricity; high Curie temperature; LEAD-FREE PIEZOCERAMICS; MORPHOTROPIC-PHASE-BOUNDARY; PIEZOELECTRIC PROPERTIES; SINGLE-CRYSTAL; FREE CERAMICS; FERROELECTRICS; TRANSITION; DEPENDENCE;

D O I：

10.1021/am404793e

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Both giant d(33) and high T-c have been obtained in a lead-free piezoelectric ternary system (0.995 - x)K0.48Na0.52NbO3-0.005BiScO(3)-xBi(0.5)(Na0.7K0.2Li0.1)(0.5)ZrO3. Thanks to the rhombohedral-tetragonal phase coexistence and the enhanced dielectric and ferroelectric properties, the ceramic with a composition of x = 0.04 shows a giant d(33) of similar to 366 pC/N together with T-c of similar to 335 C, thereby paving the way for achieving both high d(33) and high T-c in ICNN-based materials. In addition, such a ceramic has a good thermal stability of d(33) (e.g., d(33) > 319 pC/N, T <= 300 degrees C) and an enhanced stability of ferioelectric properties against temperature. The domainwall energy barrier of similar to 0.15 eV is derived from the temperature dependence of the back-switching polarization.

引用

页码：750 / 756

页数：7

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