Paper Title:
Effects of Mn-Doping on the Piezoelectric and Ferroelectric Properties of (Na0.8K0.2)0.5Bi0.5TiO3 Ceramics
  Abstract

Lead-free piezoelectric ceramics of (Na0.8K0.2)0.5Bi0.5TiO3+x wt.% Mn (abbreviated as NBKT-x% Mn, x=0~0.5) were synthesized by solid-state reaction. The grain growth of the ceramics was restrained by Mn-doping at a certain extent. The mechanical quality factor Qm increases and the dielectric loss tanδ decreases with the increase of Mn-doping. Best piezoelectric properties were obtained for the composition of NKBT-0.2%Mn: d33=158 pC·N-1, tanδ=2.9% at 1 kHz, Qm=110 and kp=30%. The P-E loops show that remnant polarization Pr and coercive field Ec decrease slightly with the amount of the Mn2+ increasing up to 0.2wt.% and then increase as the content of Mn2+ increases further. NKBT-0.5wt. % Mn exhibits strong ferroelectricity with remnant polarization Pr = 38μC/cm2.

  Info
Periodical
Key Engineering Materials (Volumes 368-372)
Edited by
Wei Pan and Jianghong Gong
Pages
69-71
DOI
10.4028/www.scientific.net/KEM.368-372.69
Citation
X. P. Jiang, L. Z. Li, F. L. Jiang, Y. Y. Zheng, L. H. Liu, "Effects of Mn-Doping on the Piezoelectric and Ferroelectric Properties of (Na0.8K0.2)0.5Bi0.5TiO3 Ceramics", Key Engineering Materials, Vols. 368-372, pp. 69-71, 2008
Online since
February 2008
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Hiroaki Takeda, C. Fujioka, Soichiro Okamura, Tadashi Shiosaki
1169
Authors: Zhi Wu Chen, Zhen Ya Lu
Abstract:A lead-free piezoelectric ceramic ternary system based on (Bi0.5Na0.5)TiO3 (BNT)-(Bi0.5 K0.5)TiO3(BKT)-BaTiO3(BT) near the morphotropic...
54
Authors: Qiang Chen, De Jun Lan, Yi Chen, Du Min Lin, Xi Yue, Ding Quan Xiao, Jian Guo Zhu
Abstract:Lead-free piezoelectric ceramics lithium sodium potassium niobate (LixNayK1-x-y)NbO3 (LNKN100x/100y) have been synthesized by a conventional...
199
Authors: Xin You Huang, Chun Hua Gao, Zhi Gang Chen
2663
Authors: Rong Xia Huang, Yu Zhen Zhao, Yong Jie Zhao, Rong Zheng Liu, He Ping Zhou
Abstract:Lead-free K0.5Na0.5NbO3-xwt% (0.4ZnO-0.6B2O3) ceramics were synthesized by...
315