Enhanced dielectric and piezoelectric properties in Li/Sb-modified (Na, K)NbO3 ceramics by optimizing sintering temperature

被引：32

作者：

Zhao, Yongjie ^{[1
]}

Huang, Rongxia ^{[1
]}

Liu, Rongzheng ^{[1
]}

Wang, Xilin ^{[1
]}

Zhou, Heping ^{[1
]}

机构：

[1] Tsinghua Univ, Dept Mat Sci & Engn, State Key Lab New Ceram & Fine Proc, Beijing 100084, Peoples R China

来源：

CERAMICS INTERNATIONAL | 2013年 / 39卷 / 01期

基金：

中国国家自然科学基金;

关键词：

Ceramics; Chemical synthesis; X-ray diffraction; Piezoelectricity; ELECTRICAL-PROPERTIES; MICROSTRUCTURE; AID;

D O I：

10.1016/j.ceramint.2012.06.043

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：

In this paper, lead-free (Na0.474K0.474Li0.052)(Nb0.948Sb0.052)O-3 ceramics were synthesized by a conventional solid-state reaction route. The effects of sintering temperature on the crystal structure, microstructure, densification, dielectric properties, and ferroelectric properties of the KNNLS ceramics were addressed. X-ray diffraction patterns and Raman spectrum indicated a transition from orthorhombic to tetragonal phase during the sintering temperature region. This transition is attributed to the migration of Li between the matrix grain and grain boundary. Scanning electron microscopy study revealed increased grain size and enhanced densification with increasing sintering temperature. The density of the ceramics sintered at 1080 degrees C reached a maximum value of 4.22 g/cm(3). KNNLS ceramics sintered at an optimum temperature of 1080 degrees C exhibited high piezoelectric properties, that is 242 pC/N for d(33), 0.42 for k(p) and 18.2 mu C/cm(2) for P-r. (c) 2012 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

引用

页码：425 / 429

页数：5

共 15 条

[1] The effects of sintering temperature on the properties of lead-free (Na0.5K0.5)NbO3-SrTiO3 ceramics [J].

Chang, Ren-Chuan ;

Chu, Sheng-Yuan ;

Wong, Yi-Peng ;

Hong, Cheng-Shong ;

Huang, Hsin-Hsuan .

JOURNAL OF ALLOYS AND COMPOUNDS, 2008, 456 (1-2) :308-312

[2] Effects of Li content on the phase structure and electrical properties of lead-free (K0.46-x/2Na0.54-x/2Lix)(Nb0.76Ta0.20Sb0.04)O3 ceramics [J].

Chang, Yunfei ;

Yang, Zupei ;

Hou, Yuting ;

Liu, Zonghuai ;

Wang, Zenglin .

APPLIED PHYSICS LETTERS, 2007, 90 (23)

[3] ⟨001⟩ textured (K0.5Na0.5)Nb0.97Sb0.03)O3 piezoelectric ceramics with high electromechanical coupling over a broad temperature range [J].

Chang, Yunfei ;

Poterala, Stephen F. ;

Yang, Zupei ;

Trolier-McKinstry, Susan ;

Messing, Gary L. .

APPLIED PHYSICS LETTERS, 2009, 95 (23)

[4] Raman scattering study of piezoelectric (Na0.5K0.5)NbO3-LiNbO3 ceramics [J].

Kakimoto, K ;

Akao, K ;

Guo, YP ;

Ohsato, H .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS, 2005, 44 (9B) :7064-7067

[5] Phase transitions and electrical properties of (Na1-xKx)(Nb1-ySby)O3 lead-free piezoelectric ceramics with a MnO2 sintering aid [J].

Lin, Dunmin ;

Kwok, Kin Wing ;

Tian, Huyong ;

Chan, Helen Wong Lai-wa .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2007, 90 (05) :1458-1462

[6] Correlation between the piezoelectric properties and the structure of lead-free KNN-modified ceramics, studied by Raman Spectroscopy [J].

Rubio-Marcos, F. ;

Banares, M. A. ;

Romero, J. J. ;

Fernandez, J. F. .

JOURNAL OF RAMAN SPECTROSCOPY, 2011, 42 (04) :639-643

[7] Structure and electrical properties of Li- and Ta-substituted K0.5Na0.5NbO3 lead-free piezoelectric ceramics prepared from nanopowders [J].

Singh, K. Chandramani ;

Jiten, Chongtham ;

Laishram, Radhapiyari ;

Thakur, O. P. ;

Bhattacharya, D. K. .

JOURNAL OF ALLOYS AND COMPOUNDS, 2010, 496 (1-2) :717-722

[8] High-temperature instability of Li- and Ta-modified (K,Na)NbO3 piezoceramics [J].

Wang, Yongli ;

Damjanovic, Dragan ;

Klein, Naama ;

Setter, Nava .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2008, 91 (06) :1962-1970

[9] Compositional inhomogeneity in Li- and Ta-modified (K, Na)NbO3 ceramics [J].

Wang, Yongli ;

Damjanovic, Dragan ;

Klein, Naama ;

Hollenstein, Evelyn ;

Setter, Nava .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2007, 90 (11) :3485-3489

[10] Phase structure, microstructure and ferroelectric properties of (1-x)[(K0.50Na0.50)0.94Li0.06](Nb0.94Sb0.06)O3-xCaTiO3 lead-free ceramics [J].

Wu, Jiagang ;

Xiao, Dingquan ;

Wang, Yuanyu ;

Zhu, Jianguo ;

Shi, Wei ;

Wu, Wenjuan ;

Zhang, Bin ;

Lia, Jing .

JOURNAL OF ALLOYS AND COMPOUNDS, 2009, 476 (1-2) :782-786

← 1 2 →