Premium
Electrical properties of [Bi 1– z (Na 1– x – y – z K x Li y )] 0.5 Ba z TiO 3 multi‐component lead‐free piezoelectric ceramics
Author(s) -
Lin Dunmin,
Xiao Dingquan,
Zhu Jianguo,
Yu Ping
Publication year - 2005
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.200510034
Subject(s) - ceramic , ferroelectricity , coercivity , materials science , analytical chemistry (journal) , piezoelectricity , polarization (electrochemistry) , perovskite (structure) , mineralogy , crystallography , dielectric , condensed matter physics , physics , chemistry , composite material , optoelectronics , chromatography
A new system of BNT‐based multi‐component lead‐free piezoelectric ceramics, [Bi 1– z (Na 1– x – y – z K x Li y )] 0.5 Ba z TiO 3 , was prepared by conventional ceramic technique and the electrical properties of the ceramics were studied. The analysis of X‐ray diffraction shows that all ceramics investigated can form a pure perovskite phase. The ceramics exhibit good piezoelec‐ tric performances and strong ferroelectricity: piezoelectric constant d 33 = 205 pC/N, electromechanical coupling factor k P = 37.0%, remanent polarization P r = 38.5 µC/cm 2 , coercive field E c = 2.80 kV/mm, and high depolarization temperature T d . It is obvious that [Bi 1– z (Na 1– x – y – z K x Li y )] 0.5 Ba z TiO 3 ceramics can be used in practical devices. (© 2005 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)