Paper Title:
Effects of Low Concentration BiFeO3 Additions on Microstructure and Piezoelectric Properties of (K0.5Na0.5)NbO3 Ceramics
  Abstract

(1- x) K0.5Na0.5NbO3 – x BiFeO3 lead-free piezoelectric ceramics were prepared by the conventional ceramic processing. The compositional dependence of the phase structure and the electrical properties of the ceramics were studied. A morphotropic phase boundary (MPB) between the orthorhombic and tetragonal phases was identified in the composition range of x = 0.01. The ceramics exhibit a strong compositional dependence and enhanced piezoelectric properties. The ceramics with 0.6 mol.% BF exhibit good electrical properties (d33 ~146 pC/N, kp ~51%, Tc ~405°C, To-t ~185 °C, εr ~432, and tan θ~ 4.60 %. The related mechanism of the enhanced electrical properties of the ceramics was also discussed. These results show that the air-sintered (1−x) KNN− x BF (0.006 < x < 0.01) ceramic is a promising lead-free piezoelectric material.

  Info
Periodical
Advanced Materials Research (Volumes 335-336)
Chapter
Chapter 7: Optical/Electronic/Magnetic Materials
Edited by
Yun-Hae Kim, Prasad Yarlagadda, Xiaodong Zhang and Zhijiu Ai
Pages
968-975
DOI
10.4028/www.scientific.net/AMR.335-336.968
Citation
P. Xu, M. H. Jiang, X. Y. Liu, "Effects of Low Concentration BiFeO3 Additions on Microstructure and Piezoelectric Properties of (K0.5Na0.5)NbO3 Ceramics", Advanced Materials Research, Vols. 335-336, pp. 968-975, 2011
Online since
September 2011
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: 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: Guang Hui Li, Zhang Lian Hong, Li Xia Peng, Min Quan Wang
Abstract:XRD, SEM, bulk density and dielectric properties measurements were used to investigate the effect of TiO2 nanopowder substitution for...
228
Authors: Satoshi Wada, Momoyo Nitta, Nobuhiro Kumada, Daisuke Tanaka, Masahito Furakawa, Chikako Moriyoshi, Yoshihiro Kuroiwa
Abstract:Barium titanate (BaTiO3, BT) and potassium niobate (KNbO3, KN) ceramics were prepared by normal sintering process. Phase diagram of BT-KN...
34
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