Bi(Me)O3–PbTiO3 high TC piezoelectric multilayers. (September 2013)

• Record Type: Journal Article
• Authors: Cumming, D J; Sebastian, T; Sterianou, I; Rödel, J; Reaney, I M
• Is Part Of: Materials technology. Volume 28:Number 5(2013)
• Page Start: 247
• Page End: 253
• Publication Date: 2013-09
• Subjects: Multilayer -- High Curie point -- Piezoelectrics -- High temperature actuators -- Interfacal reaction; Materials -- Periodicals; Materials science -- Periodicals; Materials -- Technological innovations -- Periodicals; 620.1105
• DOI: 10.1179/1753555713Y.0000000067
• Languages: English
• ISSNs: 1066-7857

Abstract

Abstract : Multilayer structures based on the composition 0·52(0·35Bi(Mg1/2 Ti1/2 )O3 –0·3BiFeO3 –0·35BiScO3 )–0·48PbTiO3 (BMFS-PT) have been fabricated with large piezoelectric activity and high T C . Reaction with Pt internal electrodes during cofiring leads to a decrease in T C and softening of the ferroelectric response, consistent with donor doping. However, this effect is minimised by extending binder burnout times up to 4 h and in samples with thicker active layers (∼100 μm). Multilayer actuators based on BMTFS-PT should therefore increase the operating temperature to <100°C above PZT structures with equivalent piezoelectric activity.