Ferroelectric Properties of Bi0.5(Na0.8K0.2)0.5TiO3 Ceramics

被引：10
|
作者：
Camargo, Javier [1 ]
Ramajo, Leandro [1 ]
Rubio-Marcos, Fernando [2 ]
Castro, Miriam [1 ]
机构：
[1] Inst Res Mat Sci & Technol INTEMA, Juan B Justo 4302,B7608FDQ, Mar Del Plata, Buenos Aires, Argentina
[2] Inst Ceram & Glass ICV, Madrid, Spain
来源：
ELECTROCERAMICS VI | 2014年 / 975卷
关键词：
piezoelectric ceramics; lead-free compositions; ferroelectric properties; PIEZOELECTRIC CERAMICS;
D O I：
10.4028/www.scientific.net/AMR.975.3
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：
Different processing conditions and the effect of secondary phases on ferroelectric properties of Bi-0.5(Na0.8K0.2)(0.5)TiO3 (BNKT) are studied. Ceramic powders are prepared by solid state reaction and different sintering temperatures (temperatures between 1075 and 1150 degrees C) are analyzed. Finally, samples are characterized by X-ray diffraction, Raman micro-spectroscopy, scanning electron microscopy, impedance spectroscopy, and density measurements. Through XRD patterns, the perovskite structure is stabilized; together with small peaks corresponding to a secondary phase associated with K2-xNaxTi6O13 phase. Moreover, the content of the secondary phase, d(33) piezoelectric constant and dielectric properties increase with sintering temperature.
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页码：3 / +
页数：2
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