Effects of Ca-dopant on the pyroelectric, piezoelectric and dielectric properties of (Sr0.6Ba0.4)4Na2Nb10O30 ceramics

被引：42

作者：

Yao, Y. B. ^{[1
,2
]}

Mak, C. L. ^{[1
]}

机构：

[1] Hong Kong Polytech Univ, Dept Appl Phys, Kowloon, Hong Kong, Peoples R China

[2] King Abdullah Univ Sci & Technol, Adv Nanofabricat Imaging & Characterizat Core Lab, Jeddah, Saudi Arabia

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2012年 / 544卷

关键词：

Sodium strontium barium niobate; Dielectric properties; Pyroelectric properties; Piezoelectric; Raman spectroscopy; STRONTIUM BARIUM NIOBATE; TUNGSTEN BRONZE CRYSTALS; FERROELECTRIC PROPERTIES; SINGLE-CRYSTALS; ELECTRICAL-PROPERTIES; PHASE-TRANSITION; SODIUM NIOBATE; GROWTH;

D O I：

10.1016/j.jallcom.2012.07.038

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Calcium-doped sodium strontium barium niobate (SBNN, (Sr0.6Ba0.4)(4-x)CaxNa2Nb10O30, 0 <= x <= 05) ceramics were prepared by a conventional solid-state reaction method. SBNN showed 'filled' tetragonal tungsten-bronze structure with fully occupied A-sites. The tetragonal structure, as revealed by X-ray diffraction (XRD) and Raman spectroscopy, was not affected by the Ca-dopant. Effects of Ca-doping concentration on the phase transitions as well as ferroelectric, piezoelectric and pyroelectric properties of the SBNN ceramics were investigated. From the dielectric studies, two anomalies were observed, namely, a sharp normal ferroelectric transition at 260 degrees C and a broad maximum at round -110 degrees C. The later was affected by the Ca-doping concentration and its origin was discussed. At x = 0.3, the sample exhibited the highest pyroelectric coefficient of 168 mu C/m(2) K and the largest piezoelectric coefficient (d(33)) of 63 pC/N at room temperature. On the basis of our results, the pyroelectric properties of the SBNN were improved by Ca-doping. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：87 / 93

页数：7

共 36 条

[1]

Abrahams S.C., 1968, PHYS REV, V172, P552

[2] Crystal growth and characterization of tetragonal tungsten bronze FerroNiobates Ba2LnFeNb4O15 [J].

Castel, E. ;

Veber, P. ;

Albino, M. ;

Velazquez, M. ;

Pechev, S. ;

Denux, D. ;

Chaminade, J. P. ;

Maglione, M. ;

Josse, M. .

JOURNAL OF CRYSTAL GROWTH, 2012, 340 (01) :156-165

[3] The fabrication and characterization of (Pb,Ca)TiO3 pyroelectric thin films with different Ca contents [J].

Chang, C. C. ;

Lai, Y. C. .

JOURNAL OF APPLIED PHYSICS, 2007, 101 (10)

[4] Preparation of single crystalline Sr0.5Ba0.5Nb2O6 particles [J].

Chen, WW ;

Kume, S ;

Duran, C ;

Watari, K .

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2006, 26 (4-5) :647-653

[5] Compositional dependence of optical and vibrational properties of strontium barium niobate (SrxBa1-xNb2O6) [J].

David, C. ;

Tunyagi, A. ;

Betzler, K. ;

Woehlecke, M. .

PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS, 2007, 244 (06) :2127-2137

[6] Structure and electrical properties of MnO2-doped Sr2-xCaxNaNb5O15 lead-free piezoelectric ceramics [J].

Fan, Xiujun ;

Wang, Yue ;

Jiang, Yijian .

JOURNAL OF ALLOYS AND COMPOUNDS, 2011, 509 (23) :6652-6658

[7] Thermal properties of calcium doped strontium barium niobate crystal [J].

Gao, Ch. Y. ;

Xia, H. R. ;

Xu, J. Q. ;

Zhou, C. L. ;

Zhang, H. J. ;

Wang, J. Y. .

APPLIED PHYSICS LETTERS, 2008, 92 (23)

[8] Phase transition and piezoelectric properties of K0.48Na0.52NbO3-LiTa0.5Nb0.5O3-NaNbO3 lead-free ceramics [J].

Gao Feng ;

Liu Liangliang ;

Xu Bei ;

Cao Xiao ;

Deng Zhenqi ;

Tian Changsheng .

JOURNAL OF ALLOYS AND COMPOUNDS, 2011, 509 (20) :6049-6055

[9] FERROELECTRIC SR1-XBAXNB2O6 AS A FAST AND SENSITIVE DETECTOR OF INFRARED RADIATION [J].

GLASS, AM .

APPLIED PHYSICS LETTERS, 1968, 13 (04) :147-&

[10] DIELECTRIC AND PYROELECTRIC PROPERTIES OF THE MORPHOTROPIC PHASE-BOUNDARY LEAD BARIUM NIOBATE (PBN) SINGLE-CRYSTALS AT LOW-TEMPERATURE (10-300 K) [J].

GUO, R ;

BHALLA, AS ;

RANDALL, CA ;

CROSS, LE .

JOURNAL OF APPLIED PHYSICS, 1990, 67 (10) :6405-6410

← 1 2 3 4 →