By Topic

Dielectric and piezoelectric properties of lead-free (Na0.5Bi0.5)TiO3-(K0.5Bi0.5)TiO3-(Li0.5Bi0.5)TiO3 ceramics with Ba2+ and Ca2+ doped

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

7 Author(s)
Ling-juan Fei ; Sch. of Mater. Sci. & Eng., Jiangsu Univ., Zhenjiang, China ; Jun Liu ; Yue-ming Wang ; Wo Tian
more authors

In this work, (0.935-x)Bi0.5Na0.5TiO3-0.05(Bi0.5K0.5TiO3)-0.015(Bi0.5Li0.5)TiO3-x(Ba1-yCay)TiO3(BNKLT-BCT) system by keeping the KBT and LBT ratio constant is investigated. The primary purpose of this study is to deal with the effects of barium calcium titanate (BCT) additive on dielectric and piezoelectric properties of BNKLT-BCT ceramics. In the paper, BNKLT-BCT ceramics were fabricated by conventional solid state reaction. XRD results show that the crystalline structure of the ceramics is perovskite. At the same time, a significant change of the dielectric behavior and piezoelectric properties takes place with increasing the content of barium calcium titanate. The ceramics show a rhombohedral-tetragonal morphotropic phase boundary (MPB) in the range of x = 0.05, y=0~0.04, which results in ceramics providing superior dielectric and piezoelectric properties. The values of piezoelectric constant d33, dielectric constant εr, and mechanical quality factor Qm of BNKLT-BCT ceramics are higher than that of BNKLT ceramics while the dielectric loss factor tanδ is lower. It is found that a small amount of barium calcium titanate additive was of great help in providing higher dielectric constant εr, and piezoelectric constant d33.

Published in:

Piezoelectricity, Acoustic Waves and Device Applications (SPAWDA), 2010 Symposium on

Date of Conference:

10-13 Dec. 2010