Electrical properties of [Bi1-z(Na1-x-y-zKxLiy)]0.5BazTiO3multi-component lead-free piezoelectric ceramics

✍ Scribed by Lin, Dunmin ;Xiao, Dingquan ;Zhu, Jianguo ;Yu, Ping

• Publisher: John Wiley and Sons
• Year: 2005
• Tongue: English
• Weight: 187 KB
• Volume: 202
• Category: Article
• ISSN: 0031-8965
• DOI: 10.1002/pssa.200510034

✦ Synopsis

Abstract

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)